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Asterisk "pedantic" SIP Processing Denial of Service
Secunia Advisory: SA30517
Release Date: 2008-06-04
Popularity: 3,382 views

Critical:
Moderately critical
Impact: DoS
Where: From remote
Solution Status: Vendor Patch

Software:Asterisk 1.x
Asterisk Business Edition 2.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
A vulnerability has been reported 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 in the "ast_uri_decode()" function. This can be exploited to crash the application via a SIP message lacking a "From" field.

Successful exploitation requires that "pedantic" processing is enabled.

The vulnerability is reported in the following products:
* Asterisk Open Source 1.0.x (all versions)
* Asterisk Open Source 1.2.x (all versions prior to 1.2.29)
* Asterisk Business Edition A.x.x (all versions)
* Asterisk Business Edition B.x.x (all versions prior to B.2.5.3)

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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