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TITLE:
Asterisk Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA48891

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/48891/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=48891

RELEASE DATE:
2012-04-24

DISCUSS ADVISORY:
http://secunia.com/advisories/48891/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/48891/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=48891

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Multiple vulnerabilities have been reported in Asterisk and Asterisk
Business Edition, which can be exploited by malicious users to cause
a DoS (Denial of Service), bypass certain security restrictions, and
compromise a vulnerable system.

1) An error within the Asterisk Manager Interface when handling
"originate" actions in the MixMonitor application or the "GetVar" or
"Status" manager actions with the "SHELL" and "EVAL" functions does
not properly restrict access and can be exploited to execute
arbitrary shell commands.

This vulnerability is reported in Asterisk versions 1.6.2.x prior to
1.6.2.24, 1.8.x prior to 1.8.11.1, and 10.x prior to 10.3.1 and
Asterisk Business Edition versions 3.x prior to 3.7.4.

2) A boundary error within the Skinny channel driver when handling
KEYPAD_BUTTON_MESSAGE events can be exploited to cause a heap-based
buffer overflow via specially crafted KEYPAD_BUTTON_MESSAGE events.

Successful exploitation of this vulnerability may allow execution of
code.

This vulnerability is reported in Asterisk versions 1.6.2.x prior to
1.6.2.24, 1.8.x prior to 1.8.11.1, and 10.x prior to 10.3.1.

3) An error within the SIP channel driver can be exploited to cause a
crash via specially crafted SIP UPDATE requests.

Successful exploitation of this vulnerability requires that the
"trustrpid" setting is set to "True".

This vulnerability is reported in Asterisk versions 1.8.x prior to
1.8.11.1 and 10.x prior to 10.3.1 and Asterisk Business Edition
versions 3.x prior to 3.7.4.

SOLUTION:
Update to a fixed version.

Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) David Woolley.
2) Russell Bryant.
3) Thomas Arimont.

ORIGINAL ADVISORY:
http://downloads.asterisk.org/pub/security/AST-2012-004.html
http://downloads.asterisk.org/pub/security/AST-2012-005.html
http://downloads.asterisk.org/pub/security/AST-2012-006.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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