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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.openwall.com/lists/oss-security/2021/02/09/7	Mailing List Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/02/09/9	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/10/7	Mailing List 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/package-announce@lists.fedoraproject.org/message/35LK2ZXEIJUOGOA7FV2TJL3L6LFJ4X5S/	Mailing List Patch Third Party Advisory
https://invisible-island.net/xterm/xterm.log.html	Release Notes Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1927559	Issue Tracking
https://github.com/ThomasDickey/xterm-snapshots/commit/82ba55b8f994ab30ff561a347b82ea340ba7075c	Patch Third Party Advisory
https://news.ycombinator.com/item?id=26524650	Issue Tracking Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-27135	Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1182091	Issue Tracking
http://seclists.org/fulldisclosure/2021/May/52	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202208-22	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:invisible-island:xterm:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

Information

Published : 2021-02-10 08:15

Updated : 2022-09-30 05:50

NVD link : CVE-2021-27135

Mitre link : CVE-2021-27135

JSON object : View

CWE

NVD-CWE-noinfo

Products Affected

debian

debian_linux

invisible-island

xterm

fedoraproject

fedora

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9.8 /10