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>> Asterisk IAX2 Channel Driver Text Frame Handling Information Disclosure Vulnerability

Title : Asterisk IAX2 Channel Driver Text Frame Handling Information Disclosure Vulnerability
VUPEN ID : VUPEN/ADV-2007-1661
CVE ID : CVE-2007-2488
Rated as : Low Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2007-05-07


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format  Receive VUPEN Security notifications by SMS 

A vulnerability has been identified in Asterisk, which could be exploited by malicious users to gain knowledge of sensitive information. This issue is caused by an error in the IAX2 channel driver "chan_iax2" when processing certain text frames, which could be exploited by malicious users to disclose arbityrary memory contents.

Affected Products

Asterisk versions 1.2.x
Asterisk versions 1.4.x
Asterisk Business Edition versions A.x.x
Asterisk Business Edition versions B.x.x
AsteriskNOW version Beta 5 and prior
Asterisk Appliance Developer Kit versions 0.x

Solution

Upgrade to Asterisk version 1.2.19 and 1.4.5 :
ftp://ftp.digium.com/pub/telephony/asterisk

Upgrade to Asterisk Business Edition version B.2.1 :
http://www.digium.com

Upgrade to AsteriskNOW version Beta 6 :
http://www.asterisknow.org

Upgrade to Asterisk Appliance Developer Kit 0.4.1 :
ftp://ftp.digium.com/pub/telephony/aadk

References

http://www.vupen.com/english/advisories/2007/1661
http://ftp.digium.com/pub/asa/ASA-2007-013.pdf

Credits

Vulnerability reported by Tim Panton and Birgit Arkesteijn.

ChangeLog

2007-05-07 : Initial release

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