Gentoo: GLSA-202211-09 Normal: xterm Arbitrary Code Execution
gentoo
November 21, 2022
A vulnerability has been found in xterm which could allow for arbitrary code execution.
Summary
xterm does not correctly handle control characters related to OSC 50 font ops sequence handling.
Resolution
All xterm users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-terms/xterm-375"
References
[ 1 ] CVE-2022-45063 https://nvd.nist.gov/vuln/detail/CVE-2022-45063
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202211-09
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Concerns
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
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Severity: Normal
Title: xterm: Arbitrary Code Execution
Date: November 22, 2022
Bugs: #880747
ID: 202211-09
Background
xterm is a terminal emulator for the X Window system.
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Affected Packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 x11-terms/xterm < 375 >= 375
Impact
=====
The vulnerability allows text written to the terminal to write text to
the terminal's command line. If the terminal's shell is zsh running with
vi line editing mode, text written to the terminal can also trigger the
execution of arbitrary commands via writing ^G to the terminal.
Workaround
As a workaround, users can disable xterm's usage of OSC 50 sequences by
adding the following to the XResources configuration:
XTerm*allowFontOps: false
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