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Gentoo Linux Security Advisory                           GLSA 202309-04
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: RAR, UnRAR: Arbitrary File Overwrite
     Date: September 17, 2023
     Bugs: #843611, #849686, #912652
       ID: 202309-04

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Synopsis
========

An arbitrary file overwrite vulnerability has been discovered in RAR and
UnRAR, potentially resulting in arbitrary code execution.

Background
==========

RAR and UnRAR provide command line interfaces for compressing and
decompressing RAR files.

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

Package         Vulnerable    Unaffected
--------------  ------------  ------------
app-arch/rar    < 6.23        >= 6.23
app-arch/unrar  < 6.2.10      >= 6.2.10

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

Due to an error in the validation of symbolic links within archives, RAR
and UnRAR can potentially write files to a directory which is outside of
the intended unpack directory.

Impact
======

If the user running RAR or UnRAR extracts a malicious archive, the
archive could overwrite a file such as the user's shell initialization
scripts, potentially resulting in arbitrary code execution in the
context of that user.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All RAR users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-arch/rar-6.23"

All UnRAR users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-arch/unrar-6.2.10"

References
==========

[ 1 ] CVE-2022-30333
      https://nvd.nist.gov/vuln/detail/CVE-2022-30333

[ 2 ] CVE-2023-40477
      https://nvd.nist.gov/vuln/detail/CVE-2023-40477

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

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

 https://security.gentoo.org/glsa/202309-04

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 [4].

License
=======

Copyright 2023 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-202309-04: RAR, UnRAR: Arbitrary File Overwrite

An arbitrary file overwrite vulnerability has been discovered in RAR and UnRAR, potentially resulting in arbitrary code execution.

Summary

Due to an error in the validation of symbolic links within archives, RAR and UnRAR can potentially write files to a directory which is outside of the intended unpack directory.

Resolution

All RAR users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-arch/rar-6.23"
All UnRAR users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-arch/unrar-6.2.10"

References

[ 1 ] CVE-2022-30333 https://nvd.nist.gov/vuln/detail/CVE-2022-30333
[ 2 ] CVE-2023-40477 https://nvd.nist.gov/vuln/detail/CVE-2023-40477

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202309-04

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 [4].

Severity
Severity: Normal
Title: RAR, UnRAR: Arbitrary File Overwrite
Date: September 17, 2023
Bugs: #843611, #849686, #912652
ID: 202309-04

Synopsis

An arbitrary file overwrite vulnerability has been discovered in RAR and UnRAR, potentially resulting in arbitrary code execution.

Background

RAR and UnRAR provide command line interfaces for compressing and decompressing RAR files.

Affected Packages

Package Vulnerable Unaffected -------------- ------------ ------------ app-arch/rar < 6.23 >= 6.23 app-arch/unrar < 6.2.10 >= 6.2.10

Impact

If the user running RAR or UnRAR extracts a malicious archive, the archive could overwrite a file such as the user's shell initialization scripts, potentially resulting in arbitrary code execution in the context of that user.

Workaround

There is no known workaround at this time.

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