CVE-2020-9760 — Classic Buffer Overflow in Weechat

CWE-120 — Classic Buffer Overflow10 documents6 sources
Severity
9.8CRITICALNVD
OSV7.5
EPSS
1.1%
top 22.36%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
WeechatDebian WeechatDebian Linux
Timeline
PublishedMar 23
Latest updateMay 24

Description

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 with longer nick prefixes, a buffer overflow and possibly a crash can happen when a new mode is set for a nick.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages4 packages

▶debiandebian/weechat< weechat 2.7.1-1 (bookworm)
▶NVDweechat/weechat0.3.4 — 2.7.1
▶Debianweechat/weechat< 2.7.1-1+3
▶Ubuntuweechat/weechat< 1.4-2ubuntu0.1+esm1+2

Also affects: Debian Linux 8.0, 9.0

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-v7rw-j9c8-92qq: An issue was discovered in WeeChat before 2↗2022-05-24
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OSV
weechat vulnerabilities↗2022-02-04
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OSV
CVE-2020-9760: An issue was discovered in WeeChat before 2↗2020-03-23
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📋Vendor Advisories

2
Ubuntu
WeeChat vulnerabilities↗2022-02-04
▶
Debian
CVE-2020-9760: weechat - An issue was discovered in WeeChat before 2.7.1 (0.3.4 to 2.7 are affected). Whe...↗2020
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💬Community

4
Bugzilla
CVE-2020-9760 weechat: receiving IRC message 005 with longer nick prefixes could result in buffer overflow and crash↗2020-03-26
▶
Bugzilla
CVE-2020-9760 weechat: receiving IRC message 005 with longer nick prefixes could result in buffer overflow and crash [epel-6]↗2020-03-26
▶
Bugzilla
CVE-2020-9760 weechat: receiving IRC message 005 with longer nick prefixes could result in buffer overflow and crash [epel-7]↗2020-03-26
▶
Bugzilla
CVE-2020-9760 weechat: receiving IRC message 005 with longer nick prefixes could result in buffer overflow and crash [fedora-all]↗2020-03-26
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