Gentoo: GLSA-202209-01: GNU Gzip, XZ Utils: Arbitrary file write | ...
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Gentoo Linux Security Advisory                           GLSA 202209-01
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                                           https://security.gentoo.org/
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 Severity: High
    Title: GNU Gzip, XZ Utils: Arbitrary file write
     Date: September 07, 2022
     Bugs: #837152, #837155
       ID: 202209-01

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Synopsis
========

A vulnerability has been discovered in GNU Gzip and XZ Utils' grep
helpers which could result in writes to arbitrary files.

Background
==========

GNU Gzip is a popular data compression program.

XZ Utils is free general-purpose data compression software with a high
compression ratio.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-arch/gzip              < 1.12                        >= 1.12
  2  app-arch/xz-utils          < 5.2.5                      >= 5.2.5

Description
===========

GNU Gzip and XZ Utils' grep helpers do not sufficiently validate certain
multi-line file names.

Impact
======

In some cases, writing to arbitrary files such as shell initialization files can be escalation to remote code execution.

Workaround
==========

Ensuring only trusted input is passed to GNU Gzip and XZ Utils' grep helpers minimizes the potential impact.

Resolution
==========

All GNU Gzip users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-arch/gzip-1.12"

All XZ Utils users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-arch/xz-utils-5.2.5"

References
==========

[ 1 ] CVE-2022-1271
      https://nvd.nist.gov/vuln/detail/CVE-2022-1271

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202209-01

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
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2022 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5

Gentoo: GLSA-202209-01: GNU Gzip, XZ Utils: Arbitrary file write

Summary

GNU Gzip and XZ Utils' grep helpers do not sufficiently validate certain multi-line file names.

Resolution

All GNU Gzip users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-arch/gzip-1.12"
All XZ Utils users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-arch/xz-utils-5.2.5"

References

[ 1 ] CVE-2022-1271 https://nvd.nist.gov/vuln/detail/CVE-2022-1271

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202209-01

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 [email protected] or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity
Severity: High
Title: GNU Gzip, XZ Utils: Arbitrary file write
Date: September 07, 2022
Bugs: #837152, #837155
ID: 202209-01

Synopsis

A vulnerability has been discovered in GNU Gzip and XZ Utils' grep helpers which could result in writes to arbitrary files.

Background

GNU Gzip is a popular data compression program.
XZ Utils is free general-purpose data compression software with a high compression ratio.

Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-arch/gzip < 1.12 >= 1.12 2 app-arch/xz-utils < 5.2.5 >= 5.2.5

Impact

In some cases, writing to arbitrary files such as shell initialization files can be escalation to remote code execution.

Workaround

Ensuring only trusted input is passed to GNU Gzip and XZ Utils' grep helpers minimizes the potential impact.

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