Bug 1173002 (CVE-2014-9374)

Summary:	CVE-2014-9374 asterisk: Remote Crash Vulnerability in WebSocket Server (AST-2014-019)
Product:	[Other] Security Response	Reporter:	Vasyl Kaigorodov <vkaigoro>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	carnil, itamar, jeff, lmadsen, rbryant
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	asterisk 11.14.2	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-20 10:48:27 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:	1173003
Bug Blocks:

Description Vasyl Kaigorodov 2014-12-11 09:47:30 UTC

Remote crash vulnerability was reported in all Asterisk 11.x versions before 11.14.2.

http://downloads.asterisk.org/pub/security/AST-2014-019.html

When handling a WebSocket frame the res_http_websocket module dynamically changes the size of the memory used to allow the provided payload to fit. If a payload length of zero was received the code would incorrectly attempt to resize to zero. This operation would succeed and end up freeing the memory but be treated as a failure. When the session was subsequently torn down this memory would get freed yet again causing a crash.

Upstream bug for this:
https://issues.asterisk.org/jira/browse/ASTERISK-24472

Upstream patches are available:
http://downloads.asterisk.org/pub/security/AST-2014-019-11.diff

This is fixed in Asterisk Open Source 11.14.2

Comment 1 Vasyl Kaigorodov 2014-12-11 09:47:50 UTC

Created asterisk tracking bugs for this issue:

Affects: fedora-all [bug 1173003]

Comment 2 Murray McAllister 2014-12-15 03:54:59 UTC

MITRE assigned CVE-2014-9374 to this issue.

Comment 3 Fedora Update System 2015-07-21 08:16:24 UTC

asterisk-11.17.1-1.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.