Vulnerability-Lookup

usn-3882-1

Vulnerability from osv_ubuntu

Published

2019-02-06 14:07

Modified

2026-04-22 07:36

Summary

curl vulnerabilities

Details

Wenxiang Qian discovered that curl incorrectly handled certain NTLM authentication messages. A remote attacker could possibly use this issue to cause curl to crash, resulting in a denial of service. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2018-16890)

Wenxiang Qian discovered that curl incorrectly handled certain NTLMv2 authentication messages. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2019-3822)

Brian Carpenter discovered that curl incorrectly handled certain SMTP responses. A remote attacker could possibly use this issue to cause curl to crash, resulting in a denial of service. (CVE-2019-3823)

References

URL

Type

	https://ubuntu.com/security/notices/USN-3882-1	ADVISORY
	https://ubuntu.com/security/CVE-2018-16890	REPORT
	https://ubuntu.com/security/CVE-2019-3822	REPORT
	https://ubuntu.com/security/CVE-2019-3823	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-3823",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.35.0-1ubuntu2.20"
          },
          {
            "binary_name": "libcurl3",
            "binary_version": "7.35.0-1ubuntu2.20"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.35.0-1ubuntu2.20"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.35.0-1ubuntu2.20"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.35.0-1ubuntu2.20?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.35.0-1ubuntu2.20"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.32.0-1ubuntu1",
        "7.33.0-1ubuntu1",
        "7.34.0-1ubuntu1",
        "7.35.0-1ubuntu1",
        "7.35.0-1ubuntu2",
        "7.35.0-1ubuntu2.1",
        "7.35.0-1ubuntu2.2",
        "7.35.0-1ubuntu2.3",
        "7.35.0-1ubuntu2.5",
        "7.35.0-1ubuntu2.6",
        "7.35.0-1ubuntu2.7",
        "7.35.0-1ubuntu2.8",
        "7.35.0-1ubuntu2.9",
        "7.35.0-1ubuntu2.10",
        "7.35.0-1ubuntu2.11",
        "7.35.0-1ubuntu2.12",
        "7.35.0-1ubuntu2.13",
        "7.35.0-1ubuntu2.14",
        "7.35.0-1ubuntu2.15",
        "7.35.0-1ubuntu2.16",
        "7.35.0-1ubuntu2.17",
        "7.35.0-1ubuntu2.19"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-16890",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2019-3822",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2019-3823",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.47.0-1ubuntu2.12"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.47.0-1ubuntu2.12?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.47.0-1ubuntu2.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.43.0-1ubuntu2",
        "7.45.0-1ubuntu1",
        "7.46.0-1ubuntu1",
        "7.47.0-1ubuntu1",
        "7.47.0-1ubuntu2",
        "7.47.0-1ubuntu2.1",
        "7.47.0-1ubuntu2.2",
        "7.47.0-1ubuntu2.3",
        "7.47.0-1ubuntu2.4",
        "7.47.0-1ubuntu2.5",
        "7.47.0-1ubuntu2.6",
        "7.47.0-1ubuntu2.7",
        "7.47.0-1ubuntu2.8",
        "7.47.0-1ubuntu2.9",
        "7.47.0-1ubuntu2.11"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-16890",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2019-3822",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2019-3823",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl4",
            "binary_version": "7.58.0-2ubuntu3.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.58.0-2ubuntu3.6?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.58.0-2ubuntu3.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.55.1-1ubuntu2",
        "7.55.1-1ubuntu2.1",
        "7.57.0-1ubuntu1",
        "7.58.0-2ubuntu1",
        "7.58.0-2ubuntu2",
        "7.58.0-2ubuntu3",
        "7.58.0-2ubuntu3.1",
        "7.58.0-2ubuntu3.2",
        "7.58.0-2ubuntu3.3",
        "7.58.0-2ubuntu3.5"
      ]
    }
  ],
  "aliases": [],
  "details": "Wenxiang Qian discovered that curl incorrectly handled certain NTLM\nauthentication messages. A remote attacker could possibly use this issue to\ncause curl to crash, resulting in a denial of service. This issue only\napplied to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10.\n(CVE-2018-16890)\n\nWenxiang Qian discovered that curl incorrectly handled certain NTLMv2\nauthentication messages. A remote attacker could use this issue to cause\ncurl to crash, resulting in a denial of service, or possibly execute\narbitrary code. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 18.04\nLTS, and Ubuntu 18.10. (CVE-2019-3822)\n\nBrian Carpenter discovered that curl incorrectly handled certain SMTP\nresponses. A remote attacker could possibly use this issue to cause curl to\ncrash, resulting in a denial of service. (CVE-2019-3823)\n",
  "id": "USN-3882-1",
  "modified": "2026-04-22T07:36:36Z",
  "published": "2019-02-06T14:07:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3882-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-16890"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-3822"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-3823"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "curl vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2018-16890",
    "UBUNTU-CVE-2019-3822",
    "UBUNTU-CVE-2019-3823"
  ]
}

ubuntu-cve-2018-16890

Vulnerability from osv_ubuntu

Published

2019-02-06 00:00

Modified

2026-04-22 07:38

Summary

Details

libcurl versions from 7.36.0 to before 7.64.0 is vulnerable to a heap buffer out-of-bounds read. The function handling incoming NTLM type-2 messages (lib/vauth/ntlm.c:ntlm_decode_type2_target) does not validate incoming data correctly and is subject to an integer overflow vulnerability. Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5.4 (Medium)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

7.5 (High)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2018-16890	REPORT
	https://curl.haxx.se/docs/CVE-2018-16890.html	REPORT
	https://ubuntu.com/security/notices/USN-3882-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2018-16890	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.47.0-1ubuntu2.12"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.47.0-1ubuntu2.12?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.47.0-1ubuntu2.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.43.0-1ubuntu2",
        "7.45.0-1ubuntu1",
        "7.46.0-1ubuntu1",
        "7.47.0-1ubuntu1",
        "7.47.0-1ubuntu2",
        "7.47.0-1ubuntu2.1",
        "7.47.0-1ubuntu2.2",
        "7.47.0-1ubuntu2.3",
        "7.47.0-1ubuntu2.4",
        "7.47.0-1ubuntu2.5",
        "7.47.0-1ubuntu2.6",
        "7.47.0-1ubuntu2.7",
        "7.47.0-1ubuntu2.8",
        "7.47.0-1ubuntu2.9",
        "7.47.0-1ubuntu2.11"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl4",
            "binary_version": "7.58.0-2ubuntu3.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.58.0-2ubuntu3.6?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.58.0-2ubuntu3.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.55.1-1ubuntu2",
        "7.55.1-1ubuntu2.1",
        "7.57.0-1ubuntu1",
        "7.58.0-2ubuntu1",
        "7.58.0-2ubuntu2",
        "7.58.0-2ubuntu3",
        "7.58.0-2ubuntu3.1",
        "7.58.0-2ubuntu3.2",
        "7.58.0-2ubuntu3.3",
        "7.58.0-2ubuntu3.5"
      ]
    }
  ],
  "aliases": [],
  "details": "libcurl versions from 7.36.0 to before 7.64.0 is vulnerable to a heap buffer out-of-bounds read. The function handling incoming NTLM type-2 messages (`lib/vauth/ntlm.c:ntlm_decode_type2_target`) does not validate incoming data correctly and is subject to an integer overflow vulnerability. Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds.",
  "id": "UBUNTU-CVE-2018-16890",
  "modified": "2026-04-22T07:38:44Z",
  "published": "2019-02-06T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-16890"
    },
    {
      "type": "REPORT",
      "url": "https://curl.haxx.se/docs/CVE-2018-16890.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3882-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-16890"
    }
  ],
  "related": [
    "USN-3882-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-16890"
  ]
}

ubuntu-cve-2019-3822

Vulnerability from osv_ubuntu

Published

2019-02-06 00:00

Modified

2026-04-22 07:38

Summary

Details

libcurl versions from 7.36.0 to before 7.64.0 are vulnerable to a stack-based buffer overflow. The function creating an outgoing NTLM type-3 header (lib/vauth/ntlm.c:Curl_auth_create_ntlm_type3_message()), generates the request HTTP header contents based on previously received data. The check that exists to prevent the local buffer from getting overflowed is implemented wrongly (using unsigned math) and as such it does not prevent the overflow from happening. This output data can grow larger than the local buffer if very large 'nt response' data is extracted from a previous NTLMv2 header provided by the malicious or broken HTTP server. Such a 'large value' needs to be around 1000 bytes or more. The actual payload data copied to the target buffer comes from the NTLMv2 type-2 response header.

Severity

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.1 (High)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

9.8 (Critical)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2019-3822	REPORT
	https://curl.haxx.se/docs/CVE-2019-3822.html	REPORT
	https://ubuntu.com/security/notices/USN-3882-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2019-3822	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.47.0-1ubuntu2.12"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.47.0-1ubuntu2.12?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.47.0-1ubuntu2.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.43.0-1ubuntu2",
        "7.45.0-1ubuntu1",
        "7.46.0-1ubuntu1",
        "7.47.0-1ubuntu1",
        "7.47.0-1ubuntu2",
        "7.47.0-1ubuntu2.1",
        "7.47.0-1ubuntu2.2",
        "7.47.0-1ubuntu2.3",
        "7.47.0-1ubuntu2.4",
        "7.47.0-1ubuntu2.5",
        "7.47.0-1ubuntu2.6",
        "7.47.0-1ubuntu2.7",
        "7.47.0-1ubuntu2.8",
        "7.47.0-1ubuntu2.9",
        "7.47.0-1ubuntu2.11"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl4",
            "binary_version": "7.58.0-2ubuntu3.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.58.0-2ubuntu3.6?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.58.0-2ubuntu3.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.55.1-1ubuntu2",
        "7.55.1-1ubuntu2.1",
        "7.57.0-1ubuntu1",
        "7.58.0-2ubuntu1",
        "7.58.0-2ubuntu2",
        "7.58.0-2ubuntu3",
        "7.58.0-2ubuntu3.1",
        "7.58.0-2ubuntu3.2",
        "7.58.0-2ubuntu3.3",
        "7.58.0-2ubuntu3.5"
      ]
    }
  ],
  "aliases": [],
  "details": "libcurl versions from 7.36.0 to before 7.64.0 are vulnerable to a stack-based buffer overflow. The function creating an outgoing NTLM type-3 header (`lib/vauth/ntlm.c:Curl_auth_create_ntlm_type3_message()`), generates the request HTTP header contents based on previously received data. The check that exists to prevent the local buffer from getting overflowed is implemented wrongly (using unsigned math) and as such it does not prevent the overflow from happening. This output data can grow larger than the local buffer if very large \u0027nt response\u0027 data is extracted from a previous NTLMv2 header provided by the malicious or broken HTTP server. Such a \u0027large value\u0027 needs to be around 1000 bytes or more. The actual payload data copied to the target buffer comes from the NTLMv2 type-2 response header.",
  "id": "UBUNTU-CVE-2019-3822",
  "modified": "2026-04-22T07:38:51Z",
  "published": "2019-02-06T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-3822"
    },
    {
      "type": "REPORT",
      "url": "https://curl.haxx.se/docs/CVE-2019-3822.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3882-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-3822"
    }
  ],
  "related": [
    "USN-3882-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-3822"
  ]
}

ubuntu-cve-2019-3823

Vulnerability from osv_ubuntu

Published

2019-02-06 00:00

Modified

2026-04-22 07:38

Summary

Details

libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to smtp_endofresp() isn't NUL terminated and contains no character ending the parsed number, and len is set to 5, then the strtol() call reads beyond the allocated buffer. The read contents will not be returned to the caller.

Severity

7.5 (High)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

4.3 (Medium)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2019-3823	REPORT
	https://curl.haxx.se/docs/CVE-2019-3823.html	REPORT
	https://ubuntu.com/security/notices/USN-3882-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2019-3823	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.35.0-1ubuntu2.20"
          },
          {
            "binary_name": "libcurl3",
            "binary_version": "7.35.0-1ubuntu2.20"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.35.0-1ubuntu2.20"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.35.0-1ubuntu2.20"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.35.0-1ubuntu2.20?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.35.0-1ubuntu2.20"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.32.0-1ubuntu1",
        "7.33.0-1ubuntu1",
        "7.34.0-1ubuntu1",
        "7.35.0-1ubuntu1",
        "7.35.0-1ubuntu2",
        "7.35.0-1ubuntu2.1",
        "7.35.0-1ubuntu2.2",
        "7.35.0-1ubuntu2.3",
        "7.35.0-1ubuntu2.5",
        "7.35.0-1ubuntu2.6",
        "7.35.0-1ubuntu2.7",
        "7.35.0-1ubuntu2.8",
        "7.35.0-1ubuntu2.9",
        "7.35.0-1ubuntu2.10",
        "7.35.0-1ubuntu2.11",
        "7.35.0-1ubuntu2.12",
        "7.35.0-1ubuntu2.13",
        "7.35.0-1ubuntu2.14",
        "7.35.0-1ubuntu2.15",
        "7.35.0-1ubuntu2.16",
        "7.35.0-1ubuntu2.17",
        "7.35.0-1ubuntu2.19"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.47.0-1ubuntu2.12"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.47.0-1ubuntu2.12"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.47.0-1ubuntu2.12?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.47.0-1ubuntu2.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.43.0-1ubuntu2",
        "7.45.0-1ubuntu1",
        "7.46.0-1ubuntu1",
        "7.47.0-1ubuntu1",
        "7.47.0-1ubuntu2",
        "7.47.0-1ubuntu2.1",
        "7.47.0-1ubuntu2.2",
        "7.47.0-1ubuntu2.3",
        "7.47.0-1ubuntu2.4",
        "7.47.0-1ubuntu2.5",
        "7.47.0-1ubuntu2.6",
        "7.47.0-1ubuntu2.7",
        "7.47.0-1ubuntu2.8",
        "7.47.0-1ubuntu2.9",
        "7.47.0-1ubuntu2.11"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.58.0-2ubuntu3.6"
          },
          {
            "binary_name": "libcurl4",
            "binary_version": "7.58.0-2ubuntu3.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.58.0-2ubuntu3.6?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.58.0-2ubuntu3.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.55.1-1ubuntu2",
        "7.55.1-1ubuntu2.1",
        "7.57.0-1ubuntu1",
        "7.58.0-2ubuntu1",
        "7.58.0-2ubuntu2",
        "7.58.0-2ubuntu3",
        "7.58.0-2ubuntu3.1",
        "7.58.0-2ubuntu3.2",
        "7.58.0-2ubuntu3.3",
        "7.58.0-2ubuntu3.5"
      ]
    }
  ],
  "aliases": [],
  "details": "libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to `smtp_endofresp()` isn\u0027t NUL terminated and contains no character ending the parsed number, and `len` is set to 5, then the `strtol()` call reads beyond the allocated buffer. The read contents will not be returned to the caller.",
  "id": "UBUNTU-CVE-2019-3823",
  "modified": "2026-04-22T07:38:51Z",
  "published": "2019-02-06T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-3823"
    },
    {
      "type": "REPORT",
      "url": "https://curl.haxx.se/docs/CVE-2019-3823.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3882-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-3823"
    }
  ],
  "related": [
    "USN-3882-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-3823"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

usn-3882-1

Vulnerability from osv_ubuntu

ubuntu-cve-2018-16890

Vulnerability from osv_ubuntu

ubuntu-cve-2019-3822

Vulnerability from osv_ubuntu

ubuntu-cve-2019-3823

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature