Vulnerabilities > CVE-2021-27135
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
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.
Vulnerable Configurations
References
- https://www.openwall.com/lists/oss-security/2021/02/09/7
- https://www.openwall.com/lists/oss-security/2021/02/09/9
- http://www.openwall.com/lists/oss-security/2021/02/10/7
- https://lists.debian.org/debian-lts-announce/2021/02/msg00019.html
- https://invisible-island.net/xterm/xterm.log.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1927559
- https://github.com/ThomasDickey/xterm-snapshots/commit/82ba55b8f994ab30ff561a347b82ea340ba7075c
- https://news.ycombinator.com/item?id=26524650
- https://access.redhat.com/security/cve/CVE-2021-27135
- https://bugzilla.suse.com/show_bug.cgi?id=1182091
- http://seclists.org/fulldisclosure/2021/May/52
- https://security.gentoo.org/glsa/202208-22
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35LK2ZXEIJUOGOA7FV2TJL3L6LFJ4X5S/