Bug 1374349 (CVE-2016-7164)

Summary:	CVE-2016-7164 libtorrent: Segmentation fault caused by malformed GZIP encoded response
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	bloch, chabotc, cse.cem+redhatbugz, denis, ianburrell, sanjay.ankur
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2016-09-11 13:37:35 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1374351, 1374352
Bug Blocks:

Description Adam Mariš 2016-09-08 13:25:41 UTC

A segmentation fault happens when receiving malformed GZIP encoded response. An attacker-controlled torrent tracker can crash victim torrent clients by sending malformed GZIP responses.

Upstream issue:

https://github.com/arvidn/libtorrent/issues/1021

Upstream patch:

https://github.com/arvidn/libtorrent/commit/debf3c6e3688aab8394fe5c47737625faffe6f9e

CVE assignment:

http://seclists.org/oss-sec/2016/q3/443

Comment 1 Adam Mariš 2016-09-08 13:26:14 UTC

Created libtorrent tracking bugs for this issue:

Affects: fedora-all [bug 1374351]
Affects: epel-all [bug 1374352]

Comment 2 Denis Fateyev 2016-09-11 13:37:35 UTC

This bug relates to a different project [1,2] which is also known as "Rasterbar Libtorrent". That project has nothing to do with Libtorrent by Rakshasa [3] which is provided by "libtorrent" package. The projects name similarity can be confusing indeed.

[1] https://github.com/arvidn/libtorrent

[2] http://libtorrent.org/

[3] https://github.com/rakshasa/libtorrent/