CVE-2021-27135
CRITICAL 9.8EPSS 7.8%
xterm before Patch #366 allows remote attackers to execute arbitrary code or cause a denial of service (segmentation fault) via a crafted UTF-8 combining character sequence.
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P - EPSS
- 7.84% chance of exploitation in the next 30 days, 95th percentile
- Published
- 2021-02-10
- Updated
- 2024-08-03
Proof-of-concept exploits (1)
Security advisories
- https://invisible-island.net/xterm/xterm.log.html
- http://www.openwall.com/lists/oss-security/2021/02/10/7
- https://access.redhat.com/security/cve/CVE-2021-27135
- ThomasDickey/xterm-snapshots/commit/82ba55b8f994ab30ff561a347b82ea340ba7075c
- https://lists.debian.org/debian-lts-announce/2021/02/msg00019.html
- https://news.ycombinator.com/item?id=26524650
- https://security.gentoo.org/glsa/202208-22
- https://www.openwall.com/lists/oss-security/2021/02/09/7
- https://www.openwall.com/lists/oss-security/2021/02/09/9
- https://bugzilla.redhat.com/show_bug.cgi?id=1927559
- https://bugzilla.suse.com/show_bug.cgi?id=1182091