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Cisco PIX and ASA TLS/MGCP Packet Processing Denial of Service
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Secunia Advisory:
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SA27193
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Release Date:
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2007-10-18
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Last Update:
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2007-10-19
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Popularity:
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7,876 views
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | Cisco Adaptive Security Appliance (ASA) 7.x
Cisco Adaptive Security Appliance (ASA) 8.x
Cisco PIX 7.x
Cisco PIX 8.x
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| CVE reference: | CVE-2007-5569
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Description:
Cisco has acknowledged some vulnerabilities in Cisco PIX and ASA appliances, which can be exploited by malicious people to cause a DoS (Denial of Service).
1) An unspecified error exists within the handling of Transport Layer Security (TLS) packets. This can be exploited to reload an affected device by sending specially crafted TLS packets.
2) An unspecified error exists within the handling of Media Gateway Control Protocol (MGCP) packets. This can be exploited to reload an affected device by sending specially crafted MGCP packets.
Successful exploitation of this vulnerability requires that the MGCP application layer protocol inspection is enabled (disabled by default).
Solution:
Apply updates (please see the vendor's advisory for details).
PIX:
http://www.cisco.com/pcgi-bin/tablebuild.pl/pix?psrtdcat20e2
ASA:
http://www.cisco.com/pcgi-bin/tablebuild.pl/asa?psrtdcat20e2
Provided and/or discovered by:
Reported by the vendor.
Changelog:
2007-10-19: Added CVE reference.
Original Advisory:
http://www.cisco.com/warp/public/707/cisco-sa-20071017-asa.shtml
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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