Base Score

CRITICAL9.8

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.

VectorNETWORK

Published Bycve@mitre.org

Published DateFeb 10, 2021, 16:15

Weakness Type (CWE):NVD-CWE-noinfo

CVSS Metrics

Base Score

9.8

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base Severity

CRITICAL

Version

3.1

Attack Vector (AV)

NETWORK

Attack Complexity (AC)

LOW

Privileges Required (PR)

NONE

User Interaction (UI)

NONE

Scope (S)

UNCHANGED

Confidentiality (C)

HIGH

Integrity (I)

HIGH

Availability (A)

HIGH

References

http://seclists.org/fulldisclosure/2021/May/52
http://www.openwall.com/lists/oss-security/2021/02/10/7
https://access.redhat.com/security/cve/CVE-2021-27135
https://bugzilla.redhat.com/show_bug.cgi?id=1927559
https://bugzilla.suse.com/show_bug.cgi?id=1182091
https://github.com/ThomasDickey/xterm-snapshots/commit/82ba55b8f994ab30ff561a347b82ea340ba7075c
https://invisible-island.net/xterm/xterm.log.html
https://lists.debian.org/debian-lts-announce/2021/02/msg00019.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35LK2ZXEIJUOGOA7FV2TJL3L6LFJ4X5S/
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

Base Score

CRITICAL9.8

Weakness Type (CWE):NVD-CWE-noinfo

CVSS Metrics

Base Score

9.8

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base Severity

CRITICAL

Version

3.1

Attack Vector (AV)

NETWORK

Attack Complexity (AC)

LOW

Privileges Required (PR)

NONE

User Interaction (UI)

NONE

Scope (S)

UNCHANGED

Confidentiality (C)

HIGH

Integrity (I)

HIGH

Availability (A)

HIGH