Bug 1002044 (CVE-2013-5641, CVE-2013-5642)

Summary: CVE-2013-5641 CVE-2013-5642 asterisk: two denial of service flaws in the SIP channel driver (AST-2013-004, AST-2013-005)
Product: [Other] Security Response Reporter: Murray McAllister <mmcallis>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: itamar, jeff, lmadsen, rbryant
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2019-06-08 02:30:28 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 1002045, 1002046    
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Description Murray McAllister 2013-08-28 11:33:43 UTC 
Two denial of service flaws were found in Asterisk. From http://downloads.asterisk.org/pub/security/AST-2013-004.html

"A remotely exploitable crash vulnerability exists in the SIP channel driver if an ACK with SDP is received after the channel has been terminated. The handling code incorrectly assumes that the channel will always be present."

This issue affected versions 1.8.x (1.8.17.0 and above) and all 11.x versions.

From http://downloads.asterisk.org/pub/security/AST-2013-005.html

"A remotely exploitable crash vulnerability exists in the SIP channel driver if an invalid SDP is sent in a SIP request that defines media descriptions before connection information. The handling code incorrectly attempts to reference the socket address information even though that information has not yet been set."

This issue affected all versions of 1.8.x, 10.x, and 11.x.

A remote attacker could use these flaws to crash Asterisk. Patches are linked to from the below advisories. These issues affect the versions of Asterisk in Fedora and EPEL 6.

External References:

http://downloads.asterisk.org/pub/security/AST-2013-004.html

http://downloads.asterisk.org/pub/security/AST-2013-005.html
Comment 1 Murray McAllister 2013-08-28 11:36:27 UTC 
Created asterisk tracking bugs for this issue:

Affects: fedora-all [bug 1002045]
Affects: epel-6 [bug 1002046]
Comment 2 Vincent Danen 2013-08-29 18:07:01 UTC 
AST-2013-004 was assigned CVE-2013-5641

AST-2013-005 was assigned CVE-2013-5642
Comment 3 Fedora Update System 2013-09-14 02:35:15 UTC 
asterisk-11.5.1-2.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 4 Fedora Update System 2013-09-14 02:37:39 UTC 
asterisk-11.5.1-2.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 6 Product Security DevOps Team 2019-06-08 02:30:28 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.