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[ GLSA 200703-14 ] Asterisk: SIP Denial of Service
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GLSA
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Joined: 12 May 2004
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PostPosted: Fri Mar 16, 2007 11:26 pm    Post subject: [ GLSA 200703-14 ] Asterisk: SIP Denial of Service Reply with quote

Gentoo Linux Security Advisory

Title: Asterisk: SIP Denial of Service (GLSA 200703-14)
Severity: normal
Exploitable: remote
Date: March 16, 2007
Bug(s): #169616
ID: 200703-14

Synopsis

Asterisk is vulnerable to Denial of Service in the SIP channel.

Background

Asterisk is an open source implementation of a telephone private branch exchange (PBX).

Affected Packages

Package: net-misc/asterisk
Vulnerable: < 1.2.14-r1
Unaffected: >= 1.2.14-r1
Unaffected: >= 1.0.12-r1 < 1.0.13
Architectures: All supported architectures


Description

The MU Security Research Team discovered that Asterisk contains a NULL-pointer dereferencing error in the SIP channel when handling request messages.

Impact

A remote attacker could cause an Asterisk server listening for SIP messages to crash by sending a specially crafted SIP request message.

Workaround

There is no known workaround at this time.

Resolution

All Asterisk users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose net-misc/asterisk
Note: Asterisk 1.0.x is no longer supported upstream so users should consider upgrading to Asterisk 1.2.x.

References

CVE-2007-1306
MU-200703-01


Last edited by GLSA on Wed Aug 13, 2008 4:19 am; edited 2 times in total
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