Improper input validation in WeeChat - CVE-2017-14727

Vulnerability identifier: #VU8599

CSH Severity: Low

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-14727

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to crash the affected messaging client.

The vulnerability exists due to an error when processing Date/time conversion specifiers in logger.c file (logger plugin) during log file creation. A remote attacker can send a specially crafted message and crash the affected client.

WeeChat
Arch Linux
Ubuntu
weechat (Alpine package)
weechat-core (Ubuntu package)
weechat-curses (Ubuntu package)
weechat-plugins (Ubuntu package)
weechat (Ubuntu package)
weechat-perl (Ubuntu package)
weechat-lua (Ubuntu package)
weechat-php (Ubuntu package)
weechat-headless (Ubuntu package)
weechat-guile (Ubuntu package)
weechat-python (Ubuntu package)
weechat-ruby (Ubuntu package)
weechat-tcl (Ubuntu package)

Update to version 1.9.1.

weechat (Alpine package) - update to 1.6-r2
weechat-core (Ubuntu package) - addressed in versions 1.4-2ubuntu0.1+esm1, 1.9.1-1ubuntu1+esm1, 2.8-1ubuntu0.1~esm1
weechat-curses (Ubuntu package) - addressed in versions 1.4-2ubuntu0.1+esm1, 1.9.1-1ubuntu1+esm1
weechat-plugins (Ubuntu package) - addressed in versions 1.4-2ubuntu0.1+esm1, 1.9.1-1ubuntu1+esm1, 2.8-1ubuntu0.1~esm1
weechat (Ubuntu package) - addressed in versions 1.4-2ubuntu0.1+esm1, 1.9.1-1ubuntu1+esm1, 2.8-1ubuntu0.1~esm1
weechat-perl (Ubuntu package) - update to 2.8-1ubuntu0.1~esm1
weechat-lua (Ubuntu package) - update to 2.8-1ubuntu0.1~esm1
weechat-php (Ubuntu package) - update to 2.8-1ubuntu0.1~esm1
weechat-headless (Ubuntu package) - update to 2.8-1ubuntu0.1~esm1
weechat-guile (Ubuntu package) - update to 2.8-1ubuntu0.1~esm1
weechat-python (Ubuntu package) - update to 2.8-1ubuntu0.1~esm1
weechat-ruby (Ubuntu package) - update to 2.8-1ubuntu0.1~esm1
weechat-tcl (Ubuntu package) - update to 2.8-1ubuntu0.1~esm1

• https://weechat.org/download/security/
• https://weechat.org/news/98/20170923-Version-1.9.1-security-release/
• https://github.com/weechat/weechat/commit/f105c6f0b56fb5687b2d2aedf37cb1d1b434d556

• Remote DoS in WeeChat
• Arch Linux update for weechat
• Improper input validation in weechat (Alpine package)
• Ubuntu update for weechat