Bug 1911324 (CVE-2020-35738) - CVE-2020-35738 wavpack: out-of-bounds write in WavpackPackSamples function in pack_utils.c
Summary: CVE-2020-35738 wavpack: out-of-bounds write in WavpackPackSamples function in...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-35738
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact: František Hrdina
URL:
Whiteboard:
Depends On: 1911325 1911326 1911383 1911384 1911385
Blocks: 1911327
TreeView+ depends on / blocked
 
Reported: 2020-12-28 18:05 UTC by Guilherme de Almeida Suckevicz
Modified: 2022-05-17 10:25 UTC (History)
4 users (show)

Fixed In Version: wavpack 5.4.0
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2021-11-02 18:23:14 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2020-12-28 18:05:09 UTC 
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. NOTE: some third-parties claim that there are later "unofficial" releases through 5.3.2, which are also affected.

Reference:
https://github.com/dbry/WavPack/issues/91
Comment 1 Guilherme de Almeida Suckevicz 2020-12-28 18:05:28 UTC 
Created mingw-wavpack tracking bugs for this issue:

Affects: fedora-all [bug 1911326]


Created wavpack tracking bugs for this issue:

Affects: fedora-all [bug 1911325]
Comment 4 Todd Cullum 2020-12-29 02:53:19 UTC 
Flaw summary:

An attacker who is able to provide a crafted input file to be processed by wavpack audio compressor (e.g. by social engineering a user to attempt to compress a malicious file) could cause a heap buffer overflow -> out-of-bounds write due to unsigned integer wrap in a call to malloc(). The highest impact of the flaw would be to application availability or data integrity.
Comment 6 Todd Cullum 2020-12-29 02:55:25 UTC 
Mitigation:

If using the wavpack utility, this flaw can be mitigated by not running the program on untrusted input files or files from untrusted sources.
Comment 7 Todd Cullum 2021-01-11 17:27:19 UTC 
Upstream commit: https://github.com/dbry/WavPack/commit/89df160596132e3bd666322e1c20b2ebd4b92cd0
Comment 8 Todd Cullum 2021-01-13 00:39:41 UTC 
External References:

https://github.com/dbry/WavPack/releases/tag/5.4.0
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