usn-6736-2
Vulnerability from osv_ubuntu
Published
2024-05-23 09:28
Modified
2026-04-27 14:11
Summary
klibc vulnerabilities
Details

USN-6736-1 fixed vulnerabilities in klibc. This update provides the corresponding updates for Ubuntu 24.04 LTS.

Original advisory details:

It was discovered that zlib, vendored in klibc, incorrectly handled pointer arithmetic. An attacker could use this issue to cause klibc to crash or to possibly execute arbitrary code. (CVE-2016-9840, CVE-2016-9841)

Danilo Ramos discovered that zlib, vendored in klibc, incorrectly handled memory when performing certain deflating operations. An attacker could use this issue to cause klibc to crash or to possibly execute arbitrary code. (CVE-2018-25032)

Evgeny Legerov discovered that zlib, vendored in klibc, incorrectly handled memory when performing certain inflate operations. An attacker could use this issue to cause klibc to crash or to possibly execute arbitrary code. (CVE-2022-37434)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2016-9840",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-9841",
              "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": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-25032",
              "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:3.1/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-2022-37434",
              "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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "klibc-utils",
            "binary_version": "2.0.13-4ubuntu0.1"
          },
          {
            "binary_name": "libklibc",
            "binary_version": "2.0.13-4ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "klibc",
        "purl": "pkg:deb/ubuntu/klibc@2.0.13-4ubuntu0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.13-4ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.13-1",
        "2.0.13-2",
        "2.0.13-2ubuntu1",
        "2.0.13-4"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-6736-1 fixed vulnerabilities in klibc. This update provides the\ncorresponding updates for Ubuntu 24.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that zlib, vendored in klibc, incorrectly handled pointer\n arithmetic. An attacker could use this issue to cause klibc to crash or to\n possibly execute arbitrary code. (CVE-2016-9840, CVE-2016-9841)\n \n Danilo Ramos discovered that zlib, vendored in klibc, incorrectly handled\n memory when performing certain deflating operations. An attacker could use\n this issue to cause klibc to crash or to possibly execute arbitrary code.\n (CVE-2018-25032)\n \n Evgeny Legerov discovered that zlib, vendored in klibc, incorrectly handled\n memory when performing certain inflate operations. An attacker could use\n this issue to cause klibc to crash or to possibly execute arbitrary code.\n (CVE-2022-37434)\n",
  "id": "USN-6736-2",
  "modified": "2026-04-27T14:11:33Z",
  "published": "2024-05-23T09:28:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6736-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-9840"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-9841"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-25032"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-37434"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "klibc vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2016-9840",
    "UBUNTU-CVE-2016-9841",
    "UBUNTU-CVE-2018-25032",
    "UBUNTU-CVE-2022-37434"
  ]
}



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Sightings

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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.
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  • 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.


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