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Medium USN-5258-1 5 CVEs

weechat vulnerabilities

Published Feb 4, 2022 · Updated Jun 25, 2026

Ecosystem: Ubuntu

Summary

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)

Fixed packages 3

ReleasePackageFixed in
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS weechat 1.4-2ubuntu0.1+esm1
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS weechat 1.9.1-1ubuntu1+esm1
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS weechat 2.8-1ubuntu0.1~esm1

Vulnerabilities 5

  • Medium 4.6
    CVE-2020-9759

    webOS TV Emulator privilege escalation vulnerability

    A Vulnerability of LG Electronic web OS TV Emulator could allow an attacker to escalate privileges and overwrite certain files. This vulnerability is due to wrong environment setting. An attacker could exploit this vulnerability through crafted configuration …

    weechat weechat Debian Ubuntu
  • Unscored —
    CVE-2017-14727

    logger.c in the logger plugin in WeeChat before 1.9.1 allows a crash via strftime date/time specifiers, because a buffe…

    weechat weechat weechat Debian Ubuntu Alpine
  • Unscored —
    CVE-2020-8955

    irc_mode_channel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of s…

    weechat weechat weechat Debian Ubuntu Alpine
  • Unscored —
    CVE-2020-9760

    An issue was discovered in WeeChat before 2.7.1 (0.3.4 to 2.7 are affected). When a new IRC message 005 is received wit…

    weechat weechat Debian Ubuntu
  • Unscored —
    CVE-2021-40516

    WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a crafted WebSocket frame that tr…

    weechat weechat weechat Debian Ubuntu Alpine

References

  • report
    https://ubuntu.com/security/CVE-2017-14727
  • report
    https://ubuntu.com/security/CVE-2020-8955
  • report
    https://ubuntu.com/security/CVE-2020-9759
  • report
    https://ubuntu.com/security/CVE-2020-9760
  • report
    https://ubuntu.com/security/CVE-2021-40516