GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration
usn-5258-1
Vulnerability from osv_ubuntu
Published
2022-02-04 16:38
Modified
2026-06-25 10:46
Summary
weechat vulnerabilities
Details

Stuart Nevans Locke discovered that WeeChat's relay plugin insecurely handled malformed websocket frames. A remote attacker in control of a server could possibly use this issue to cause denial of service in a client. (CVE-2021-40516)

Stuart Nevans Locke discovered that WeeChat insecurely handled certain IRC messages. A remote attacker in control of a server could possibly use this issue to cause denial of service in a client. This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2020-9760)

Stuart Nevans Locke discovered that WeeChat insecurely handled certain IRC messages. A remote unauthenticated attacker could possibly use these issues to cause denial of service in a client. These issues only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2020-9759, CVE-2020-8955)

Joseph Bisch discovered that WeeChat's logger incorrectly handled certain memory operations when handling log file names. A remote attacker could possibly use this issue to cause denial of service in a client. This issue only affected Ubuntu 16.04 ESM. (CVE-2017-14727)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2017-14727",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-8955",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-9759",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-9760",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-40516",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "weechat",
            "binary_version": "1.4-2ubuntu0.1+esm1"
          },
          {
            "binary_name": "weechat-core",
            "binary_version": "1.4-2ubuntu0.1+esm1"
          },
          {
            "binary_name": "weechat-curses",
            "binary_version": "1.4-2ubuntu0.1+esm1"
          },
          {
            "binary_name": "weechat-plugins",
            "binary_version": "1.4-2ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "weechat",
        "purl": "pkg:deb/ubuntu/weechat@1.4-2ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4-2ubuntu0.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3-1",
        "1.3-1build1",
        "1.4-1",
        "1.4-1build1",
        "1.4-1build2",
        "1.4-2",
        "1.4-2ubuntu0.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-8955",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-9759",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-9760",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-40516",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "weechat",
            "binary_version": "1.9.1-1ubuntu1+esm1"
          },
          {
            "binary_name": "weechat-core",
            "binary_version": "1.9.1-1ubuntu1+esm1"
          },
          {
            "binary_name": "weechat-curses",
            "binary_version": "1.9.1-1ubuntu1+esm1"
          },
          {
            "binary_name": "weechat-plugins",
            "binary_version": "1.9.1-1ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "weechat",
        "purl": "pkg:deb/ubuntu/weechat@1.9.1-1ubuntu1+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.9.1-1ubuntu1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.9.1-1",
        "1.9.1-1build1",
        "1.9.1-1ubuntu1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-40516",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "weechat",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "weechat-core",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "weechat-curses",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "weechat-guile",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "weechat-headless",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "weechat-lua",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "weechat-perl",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "weechat-php",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "weechat-plugins",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "weechat-python",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "weechat-ruby",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "weechat-tcl",
            "binary_version": "2.8-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "weechat",
        "purl": "pkg:deb/ubuntu/weechat@2.8-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.8-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.6-2",
        "2.6-2build1",
        "2.6-2build2",
        "2.6-2ubuntu1",
        "2.6-2ubuntu2",
        "2.8-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Stuart Nevans Locke discovered that WeeChat\u0027s relay plugin insecurely handled\nmalformed websocket frames. A remote attacker in control of a server\ncould possibly use this issue to cause denial of service in a client.\n(CVE-2021-40516)\n\nStuart Nevans Locke discovered that WeeChat insecurely handled certain\nIRC messages. A remote attacker in control of a server could possibly use\nthis issue to cause denial of service in a client. This issue only affected\nUbuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2020-9760)\n\nStuart Nevans Locke discovered that WeeChat insecurely handled certain\nIRC messages. A remote unauthenticated attacker could possibly use these\nissues to cause denial of service in a client. These issues only affected\nUbuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2020-9759, CVE-2020-8955)\n\nJoseph Bisch discovered that WeeChat\u0027s logger incorrectly handled certain\nmemory operations when handling log file names. A remote attacker could possibly\nuse this issue to cause denial of service in a client. This issue only\naffected Ubuntu 16.04 ESM. (CVE-2017-14727)\n",
  "id": "USN-5258-1",
  "modified": "2026-06-25T10:46:03Z",
  "published": "2022-02-04T16:38:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5258-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-14727"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-8955"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-9759"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-9760"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-40516"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "weechat vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2017-14727",
    "UBUNTU-CVE-2020-8955",
    "UBUNTU-CVE-2020-9759",
    "UBUNTU-CVE-2020-9760",
    "UBUNTU-CVE-2021-40516"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.