Vulnerability Details : CVE-2021-27135
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.
Vulnerability category: Memory CorruptionExecute codeDenial of service
Exploit prediction scoring system (EPSS) score for CVE-2021-27135
Probability of exploitation activity in the next 30 days: 3.63%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 91 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-27135
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
[email protected] |
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
[email protected] |
References for CVE-2021-27135
-
http://seclists.org/fulldisclosure/2021/May/52
Mailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1927559
Issue Tracking
-
http://www.openwall.com/lists/oss-security/2021/02/10/7
Mailing List;Third Party Advisory
-
https://access.redhat.com/security/cve/CVE-2021-27135
Third Party Advisory
-
https://www.openwall.com/lists/oss-security/2021/02/09/9
Mailing List;Third Party Advisory
-
https://news.ycombinator.com/item?id=26524650
Issue Tracking;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/02/msg00019.html
Mailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/35LK2ZXEIJUOGOA7FV2TJL3L6LFJ4X5S/
Mailing List;Patch;Third Party Advisory
-
https://security.gentoo.org/glsa/202208-22
Third Party Advisory
-
https://www.openwall.com/lists/oss-security/2021/02/09/7
Mailing List;Third Party Advisory
-
https://bugzilla.suse.com/show_bug.cgi?id=1182091
Issue Tracking
-
https://invisible-island.net/xterm/xterm.log.html
Release Notes;Vendor Advisory
-
https://github.com/ThomasDickey/xterm-snapshots/commit/82ba55b8f994ab30ff561a347b82ea340ba7075c
Patch;Third Party Advisory
Products affected by CVE-2021-27135
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:invisible-island:xterm:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*