Bug 1631088 (CVE-2018-17095)

Summary:	CVE-2018-17095 audiofile: Heap-based buffer overflow in Expand3To4Module::run() when running sfconvert
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ajax, alexl, gwync, john.j5live, mclasen, rhughes, rstrode, sandmann, wtaymans
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-09-29 21:57:20 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:	1631089, 1637128
Bug Blocks:	1631090

Description Pedro Sampaio 2018-09-19 20:48:43 UTC

An issue has been discovered in mpruett Audio File Library (aka audiofile) 0.3.6. A heap-based buffer overflow in Expand3To4Module::run has occurred when running sfconvert.

Upstream issues:

https://github.com/mpruett/audiofile/issues/50
https://github.com/mpruett/audiofile/issues/51

Comment 1 Pedro Sampaio 2018-09-19 20:49:11 UTC

Created audiofile tracking bugs for this issue:

Affects: fedora-all [bug 1631089]

Comment 2 Scott Gayou 2018-10-08 16:14:48 UTC

Upstream Patch:
https://github.com/wtay/audiofile/commit/822b732fd31ffcb78f6920001e9b1fbd815fa712

Comment 4 Scott Gayou 2018-10-08 16:49:46 UTC

Upstream has two issues for what appears to be the exact same flaw.

See test1 run:

```
Audio File Library: file missing data -- read 0 frames, should be 5 [error 5]
==18400== Invalid write of size 4
==18400==    at 0x4E55C07: ??? (in /usr/lib64/libaudiofile.so.1.0.0)
==18400==    by 0x4E4C8E2: afReadFrames (in /usr/lib64/libaudiofile.so.1.0.0)
==18400==    by 0x401E4D: ??? (in /usr/bin/sfconvert)
==18400==    by 0x40162D: ??? (in /usr/bin/sfconvert)
==18400==    by 0x50913D4: (below main) (in /usr/lib64/libc-2.17.so)
```

and test2 run:
```
Audio File Library: file missing data -- read 0 frames, should be 5 [error 5]
==18402== Invalid write of size 4
==18402==    at 0x4E55C07: ??? (in /usr/lib64/libaudiofile.so.1.0.0)
==18402==    by 0x4E4C8E2: afReadFrames (in /usr/lib64/libaudiofile.so.1.0.0)
==18402==    by 0x401E4D: ??? (in /usr/bin/sfconvert)
==18402==    by 0x40162D: ??? (in /usr/bin/sfconvert)
==18402==    by 0x50913D4: (below main) (in /usr/lib64/libc-2.17.so)
```

Comment 6 errata-xmlrpc 2020-09-29 19:29:38 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:3877 https://access.redhat.com/errata/RHSA-2020:3877

Comment 7 Product Security DevOps Team 2020-09-29 21:57:20 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-17095