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Gentoo Linux Security Advisory 202309-04

Gentoo Linux Security Advisory 202309-4 - An arbitrary file overwrite vulnerability has been discovered in RAR and UnRAR, potentially resulting in arbitrary code execution. Versions greater than or equal to 6.23 are affected.

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Gentoo Linux Security Advisory GLSA 202309-04


                                       https://security.gentoo.org/  

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

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
[email protected] 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

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