Vulnerability-Lookup

ubuntu-cve-2020-27347

Vulnerability from osv_ubuntu

Published

2020-11-04 00:00

Modified

2025-09-08 16:46

Summary

Details

In tmux before version 3.1c the function input_csi_dispatch_sgr_colon() in file input.c contained a stack-based buffer-overflow that can be exploited by terminal output.

Severity

8.5 (High)


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

7.8 (High)


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

8.8 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2020-27347	REPORT
	https://raw.githubusercontent.com/tmux/tmux/3.1c/…	REPORT
	https://ubuntu.com/security/notices/USN-4618-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2020-27347	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "tmux",
            "binary_version": "3.0a-2ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "tmux",
        "purl": "pkg:deb/ubuntu/tmux@3.0a-2ubuntu0.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0a-2ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9a-3build1",
        "2.9a-3build2",
        "3.0-1",
        "3.0a-1",
        "3.0a-2",
        "3.0a-2ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "In tmux before version 3.1c the function input_csi_dispatch_sgr_colon() in file input.c contained a stack-based buffer-overflow that can be exploited by terminal output.",
  "id": "UBUNTU-CVE-2020-27347",
  "modified": "2025-09-08T16:46:26Z",
  "published": "2020-11-04T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27347"
    },
    {
      "type": "REPORT",
      "url": "https://raw.githubusercontent.com/tmux/tmux/3.1c/CHANGES"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4618-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-27347"
    }
  ],
  "related": [
    "USN-4618-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-27347"
  ]
}

CVE-2020-27347 (GCVE-0-2020-27347)

Vulnerability from cvelistv5 – Published: 2020-11-06 02:20 – Updated: 2024-09-17 00:20

Title

tmux stack buffer overflow in function input_csi_dispatch_sgr_colon

Summary

In tmux before version 3.1c the function input_csi_dispatch_sgr_colon() in file input.c contained a stack-based buffer-overflow that can be exploited by terminal output.

Severity

8.8 (High)


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

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

canonical

References

4 references

URL	Tags
https://github.com/tmux/tmux/commit/a868bacb46e3c…	x_refsource_MISC
https://www.openwall.com/lists/oss-security/2020/…	x_refsource_MISC
https://security.gentoo.org/glsa/202011-10	vendor-advisoryx_refsource_GENTOO
https://raw.githubusercontent.com/tmux/tmux/3.1c/…	x_refsource_CONFIRM

Impacted products

2 products

Vendor	Product	Version
tmux	tmux	Affected: unspecified , < 3.1c (custom)
Ubuntu	tmux	Affected: 3.1b , < 3.1b-1ubuntu0.1 (custom) Affected: 3.0a , < 3.0a-2ubuntu0.2 (custom)

Date Public

2020-11-04 00:00

Credits

Sergey Nizovtsev

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T16:11:36.587Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/tmux/tmux/commit/a868bacb46e3c900530bed47a1c6f85b0fbe701c"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2020/11/05/3"
          },
          {
            "name": "GLSA-202011-10",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202011-10"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://raw.githubusercontent.com/tmux/tmux/3.1c/CHANGES"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "tmux",
          "vendor": "tmux",
          "versions": [
            {
              "lessThan": "3.1c",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "tmux",
          "vendor": "Ubuntu",
          "versions": [
            {
              "lessThan": "3.1b-1ubuntu0.1",
              "status": "affected",
              "version": "3.1b",
              "versionType": "custom"
            },
            {
              "lessThan": "3.0a-2ubuntu0.2",
              "status": "affected",
              "version": "3.0a",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Sergey Nizovtsev"
        }
      ],
      "datePublic": "2020-11-04T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "In tmux before version 3.1c the function input_csi_dispatch_sgr_colon() in file input.c contained a stack-based buffer-overflow that can be exploited by terminal output."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121 Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-11-17T18:32:44.000Z",
        "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
        "shortName": "canonical"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tmux/tmux/commit/a868bacb46e3c900530bed47a1c6f85b0fbe701c"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.openwall.com/lists/oss-security/2020/11/05/3"
        },
        {
          "name": "GLSA-202011-10",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202011-10"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://raw.githubusercontent.com/tmux/tmux/3.1c/CHANGES"
        }
      ],
      "source": {
        "advisory": "https://usn.ubuntu.com/usn/usn-4618-1",
        "discovery": "EXTERNAL"
      },
      "title": "tmux stack buffer overflow in function input_csi_dispatch_sgr_colon",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@ubuntu.com",
          "DATE_PUBLIC": "2020-11-04T00:00:00.000Z",
          "ID": "CVE-2020-27347",
          "STATE": "PUBLIC",
          "TITLE": "tmux stack buffer overflow in function input_csi_dispatch_sgr_colon"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "tmux",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "3.1c"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "tmux"
              },
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "tmux",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_name": "3.1b",
                            "version_value": "3.1b-1ubuntu0.1"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "3.0a",
                            "version_value": "3.0a-2ubuntu0.2"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Ubuntu"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Sergey Nizovtsev"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "In tmux before version 3.1c the function input_csi_dispatch_sgr_colon() in file input.c contained a stack-based buffer-overflow that can be exploited by terminal output."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-121 Stack-based Buffer Overflow"
                }
              ]
            }
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/tmux/tmux/commit/a868bacb46e3c900530bed47a1c6f85b0fbe701c",
              "refsource": "MISC",
              "url": "https://github.com/tmux/tmux/commit/a868bacb46e3c900530bed47a1c6f85b0fbe701c"
            },
            {
              "name": "https://www.openwall.com/lists/oss-security/2020/11/05/3",
              "refsource": "MISC",
              "url": "https://www.openwall.com/lists/oss-security/2020/11/05/3"
            },
            {
              "name": "GLSA-202011-10",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/202011-10"
            },
            {
              "name": "https://raw.githubusercontent.com/tmux/tmux/3.1c/CHANGES",
              "refsource": "CONFIRM",
              "url": "https://raw.githubusercontent.com/tmux/tmux/3.1c/CHANGES"
            }
          ]
        },
        "source": {
          "advisory": "https://usn.ubuntu.com/usn/usn-4618-1",
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
    "assignerShortName": "canonical",
    "cveId": "CVE-2020-27347",
    "datePublished": "2020-11-06T02:20:13.352Z",
    "dateReserved": "2020-10-20T00:00:00.000Z",
    "dateUpdated": "2024-09-17T00:20:28.710Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

usn-4618-1

Vulnerability from osv_ubuntu

Published

2020-11-05 13:38

Modified

2026-02-10 04:41

Summary

tmux vulnerability

Details

Sergey Nizovtsev discovered that tmux incorrectly handled some inputs. An attacker could possibly use this issue to cause a crash or execute arbitrary code.

References

URL

Type

	https://ubuntu.com/security/notices/USN-4618-1	ADVISORY
	https://ubuntu.com/security/CVE-2020-27347	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-27347",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "tmux",
            "binary_version": "3.0a-2ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "tmux",
        "purl": "pkg:deb/ubuntu/tmux@3.0a-2ubuntu0.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0a-2ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9a-3build1",
        "2.9a-3build2",
        "3.0-1",
        "3.0a-1",
        "3.0a-2",
        "3.0a-2ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Sergey Nizovtsev discovered that tmux incorrectly handled some inputs.\nAn attacker could possibly use this issue to cause a crash or execute arbitrary code.\n",
  "id": "USN-4618-1",
  "modified": "2026-02-10T04:41:58Z",
  "published": "2020-11-05T13:38:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4618-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27347"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "tmux vulnerability",
  "upstream": [
    "UBUNTU-CVE-2020-27347"
  ]
}

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

ubuntu-cve-2020-27347

Vulnerability from osv_ubuntu

CVE-2020-27347 (GCVE-0-2020-27347)

usn-4618-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature