Secunia Security Advisory - Multiple vulnerabilities have been reported in Asterisk, which can be exploited by malicious people to cause a DoS (Denial of Service).
51038f37cea0f04f48bf2abe626c2a4b6f769c893a4484b70c29755e5fd22e9e
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Frost & Sullivan 2011 Report: Secunia Vulnerability Research
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Read the report here:
http://secunia.com/products/corporate/vim/fs_request_2011/
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TITLE:
Asterisk Multiple Denial of Service Vulnerabilities
SECUNIA ADVISORY ID:
SA45048
VERIFY ADVISORY:
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http://secunia.com/advisories/45048/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45048
RELEASE DATE:
2011-06-24
DISCUSS ADVISORY:
http://secunia.com/advisories/45048/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
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* Impact
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* Operating System / Software
* CVE Reference(s)
http://secunia.com/advisories/45048/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=45048
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DESCRIPTION:
Multiple vulnerabilities have been reported in Asterisk, which can be
exploited by malicious people to cause a DoS (Denial of Service).
1) An input validation error in the "sipsock_read()" function
(channels/chan_sip.c) when processing requests containing a NULL byte
can be exploited to corrupt memory and cause a crash via a specially
crafted SIP packet.
2) A NULL pointer dereference error in the "get_in_brackets_full()"
function (channels/sip/reqresp_parser.c) can be exploited to cause a
crash via a specially crafted SIP "Contact" header.
3) An input validation error in the IAX2 channel driver
(channels/chan_iax2.c) within the "iax2_setoption()" function can be
exploited to access an invalid pointer supplied via a specially
crafted option control frame.
Please see the vendor's advisory for a list of affected versions.
SOLUTION:
Apply updates or patches. Please see the vendor's advisory for
details.
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
PROVIDED AND/OR DISCOVERED BY:
1) The vendor credits Paul Belanger.
2) The vendor credits jaredmauch.
3) Reported by the vendor.
ORIGINAL ADVISORY:
Asterisk:
http://downloads.asterisk.org/pub/security/AST-2011-008.html
http://downloads.asterisk.org/pub/security/AST-2011-009.html
http://downloads.asterisk.org/pub/security/AST-2011-010.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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