Asterisk IAX2 information disclosure
| asterisk-iax2-information-disclosure (34085) |  Low Risk |
Description:
Asterisk could allow a remote attacker to obtain sensitive information caused by improper handling of text frames by the IAX2 channel driver (chan_iax2). An attacker could send a specially-crafted frame without a NULL terminating byte to cause Asterisk to return arbitrary memory contents.
Platforms Affected:
- Debian, Debian Linux 3.1
- Debian, Debian Linux 4.0
- Digium, Asterisk Appliance Developer Kit 0.x.x
- Digium, Asterisk Business Edition A.x.x
- Digium, Asterisk Business Edition B.x.x
- Digium, Asterisk Open Source 1.0.0
- Digium, Asterisk Open Source 1.2.x
- Digium, Asterisk Open Source 1.4.x
- Digium, AsteriskNOW pre-release
- Novell, OpenSUSE 10.2
- SuSE, SuSE SLES 9
Remedy:
Refer to ASA-2007-013 for patch, upgrade or suggested workaround information. See References.
For Debian/GNU Linux:
Refer to DSA-1358-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Obtain Information
References:
- ASA-2007-013, IAX2 users can cause unauthorized data disclosure at http://ftp.digium.com/pub/asa/ASA-2007-013.pdf.
- Asterisk Web site, Asterisk- Downloads at http://asterisk.org/downloads.
- BID-23824: Asterisk IAX2 Text Frame Information Disclosure Vulnerability
- CVE-2007-2488: The IAX2 channel driver (chan_iax2) in Asterisk before 20070504 does not properly null terminate data, which allows remote attackers to trigger loss of transmitted data, and possibly obtain sensitive information (memory contents) or cause a denial of service (application crash), by sending a frame that lacks a 0 byte.
- DSA-1358: asterisk -- several vulnerabilities
- SA25134: Asterisk IAX2 Channel Driver Information Disclosure
- SUSE-SA:2007:034: Asterisk security update
- VUPEN/ADV-2007-1661: Asterisk IAX2 Channel Driver Text Frame Handling Information Disclosure Vulnerability
Reported:
May 04, 2007
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