CVE-2022-45063

Publication date 10 November 2022

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

xterm before 375 allows code execution via font ops, e.g., because an OSC 50 response may have Ctrl-g and therefore lead to command execution within the vi line-editing mode of Zsh. NOTE: font ops are not allowed in the xterm default configurations of some Linux distributions.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
xterm	23.04 lunar	Not affected
	22.10 kinetic	Ignored end of life, was ignored [code-not-compiled]
	22.04 LTS jammy	Ignored code-not-compiled
	20.04 LTS focal	Ignored code-not-compiled
	18.04 LTS bionic	Ignored code-not-compiled
	16.04 LTS xenial	Ignored code-not-compiled
	14.04 LTS trusty	Ignored end of standard support

Notes

eslerm

disabled by default, see 904_fontops.diff and 902_windowops.diff

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H