[ASA-202101-23] wavpack: arbitrary code execution

[Morten Linderud]

Arch Linux Security Advisory ASA-202101-23
==========================================

Severity: Medium
Date    : 2021-01-12
CVE-ID  : CVE-2020-35738
Package : wavpack
Type    : arbitrary code execution
Remote  : No
Link    : https://security.archlinux.org/AVG-1387

Summary
=======

The package wavpack before version 5.3.0-2 is vulnerable to arbitrary
code execution.

Resolution
==========

Upgrade to 5.3.0-2.

# pacman -Syu "wavpack>=5.3.0-2"

The problem has been fixed upstream but no release is available yet.

Workaround
==========

None.

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

WavPack 5.3.0 has an out-of-bounds write in WavpackPackSamples in
pack_utils.c because of an integer overflow in a malloc argument.

Impact
======

A local user might execute arbitrary code through a crafted file.

References
==========

https://bugs.archlinux.org/task/69234
https://github.com/dbry/WavPack/issues/91
https://github.com/dbry/WavPack/files/5745022/crash.wav.tar.gz
https://github.com/dbry/WavPack/commit/63f3ec70129843dd64e11aa4c21c4a1cf00c9f1c
https://github.com/dbry/WavPack/commit/89df160596132e3bd666322e1c20b2ebd4b92cd0
https://security.archlinux.org/CVE-2020-35738
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