Bug 688678 (CVE-2011-1175)

Summary:	CVE-2011-1175 asterisk: DoS in TCP/TLS server due to NULL ptr deref (AST-2011-004)
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	itamar, jeff
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2011-05-16 21:27:00 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:

Description Vincent Danen 2011-03-17 17:25:46 UTC

AST-2011-004 [1] describes a remote crash vulnerability in the Asterisk TCP/TLS server.  If a remote, unauthenticated, attacker were to rapidly open and close TCP connections to services using the ast_tcptls_* API, they could cause Asterisk to crash after dereferencing a NULL pointer.  This flaw affects 1.6.2.x and 1.8.x, and is corrected in 1.6.2.17.1 and 1.8.3.1.

[1] http://downloads.asterisk.org/pub/security/AST-2011-004.pdf

Comment 1 Vincent Danen 2011-03-22 04:14:41 UTC

This is assigned CVE-2011-1175.

Comment 2 Vincent Danen 2011-05-16 21:27:00 UTC

This is corrected via these builds that have the fixes from upstream:

Fedora-13: asterisk-1.6.2.18-1.fc13
Fedora-14: asterisk-1.6.2.18-1.fc14
Fedora-15: asterisk-1.8.3.3-1.fc15
Fedora-Rawhide: asterisk-1.8.3.3-1.fc16
EPEL-6: asterisk-1.8.3.3-1.el6