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Asterisk SIP Message Handling Denial of Service
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Secunia Advisory:
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SA24380
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Release Date:
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2007-03-07
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Last Update:
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2007-03-19
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Popularity:
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8,758 views
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Asterisk 1.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2007-1306
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Description:
MU Security Research Team has reported a vulnerability in Asterisk, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to a NULL-pointer dereference error when handling SIP request messages. This can be exploited to crash the service via a specially crafted SIP message with no URI and SIP version sent to default port 5060/UDP.
The vulnerability is reported in version 1.4.0 and 1.2.15. Prior versions may also be affected.
Solution:
Update to version 1.4.1 or 1.2.16.
Provided and/or discovered by:
MU Security Research Team
Changelog:
2007-03-08: Updated description to include additional information from MU Security.
2007-03-19: Added CVE reference.
Original Advisory:
Asterisk:
http://asterisk.org/node/48320
http://asterisk.org/node/48319
MU Security:
http://labs.musecurity.com/advisories/MU-200703-01.txt
Other References:
US-CERT VU#228032:
http://www.kb.cert.org/vuls/id/228032
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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