Buffer overflow in Weechat
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 with longer nick prefixes, a buffer overflow and possibly a crash can happen when a new mode is set for a nick.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (82.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Weechat
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
References
- weechat.org/doc/security/ (Vendor Advisory)
- github.com/weechat/weechat/commit/40ccacb4330a64802b1f1e28ed9a6b6d3ca9197f (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/03/msg00031.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202003-51 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/09/msg00018.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-9760?
- CVE-2020-9760 is a critical-severity vulnerability in Weechat, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-03-23.
- How severe is CVE-2020-9760?
- Critical severity. CVSS v3 base score is 9.8 out of 10.