Bug 1911324 (CVE-2020-35738)

Summary:	CVE-2020-35738 wavpack: out-of-bounds write in WavpackPackSamples function in pack_utils.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:	František Hrdina <fhrdina>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	lemenkov, rh-spice-bugs, tkorbar, valtri
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	wavpack 5.4.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-02 18:23:14 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1911325, 1911326, 1911383, 1911384, 1911385
Bug Blocks:	1911327

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