CVE-2005-3774 Information

Description

Cisco PIX 6.3 and 7.0 allows remote attackers to cause a denial of service (blocked new connections) via spoofed TCP packets that cause the PIX to create embryonic connections that that would not produce a valid connection with the end system including (1) SYN packets with invalid checksums which do not result in a RST; or from an external interface (2) one byte of \meaningless data\ or (3) a TTL that is one less than needed to reach the internal destination.

Reference

http://lists.grok.org.uk/pipermail/full-disclosure/2005-November/038971.html http://lists.grok.org.uk/pipermail/full-disclosure/2005-November/038983.html http://secunia.com/advisories/17670 http://securitytracker.com/id?1015256 http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_security_notice09186a0080624a37.html http://www.cisco.com/warp/public/707/cisco-response-20051122-pix.shtml http://www.kb.cert.org/vuls/id/853540 http://www.osvdb.org/24140 http://www.securityfocus.com/archive/1/417458/30/0/threaded http://www.securityfocus.com/archive/1/426989/100/0/threaded http://www.securityfocus.com/archive/1/426991/100/0/threaded http://www.securityfocus.com/archive/1/427041/100/0/threaded http://www.securityfocus.com/bid/15525 http://www.vupen.com/english/advisories/2005/2546 https://exchange.xforce.ibmcloud.com/vulnerabilities/25077 https://exchange.xforce.ibmcloud.com/vulnerabilities/25079