Bug 1348852 (CVE-2016-2377)

Summary:	CVE-2016-2377 pidgin: MXIT HTTP Content-Length Buffer Overflow Vulnerability
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	cschalle, debarshir, itamar, jskarvad, jsynacek, mbarnes, stu
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	pidgin 2.11.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 02:55:20 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:	1350338, 1403136
Bug Blocks:	1348890

Description Andrej Nemec 2016-06-22 08:29:46 UTC

A buffer vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent by the server could potentially result in an out of bounds write of one byte. A malicious server can send a negative content-length in response to a HTTP request triggering the vulnerability.

External references:

http://www.talosintel.com/reports/TALOS-2016-0119/
http://www.pidgin.im/news/security/?id=93

Upstream fix:

https://bitbucket.org/pidgin/main/commits/0f94ef13ab37