CVE-2005-3774
mediumpriority · track · 36EPSS 0.182 · 97 %ileexploit · functionalEUUSEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (2)
Public proof-of-concept and weaponised exploit code.
- EDB-1338Cisco PIX - Spoofed TCP SYN Packets Remote Denial of Servicefunctional · exploit_db
- EDB-26548Cisco PIX - TCP SYN Packet Denial of Servicefunctional · exploit_db
affected products (3)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (32)
External citations — patches, advisories, analysis.
- http://lists.grok.org.uk/pipermail/full-disclosure/2005-November/038971.htmlenisa_euvd
- http://lists.grok.org.uk/pipermail/full-disclosure/2005-November/038983.htmlenisa_euvd
- http://secunia.com/advisories/17670enisa_euvd
- http://securitytracker.com/id?1015256enisa_euvd
- http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_security_notice09186a0080624a37.htmlenisa_euvd
- http://www.cisco.com/warp/public/707/cisco-response-20051122-pix.shtmlenisa_euvd
- http://www.kb.cert.org/vuls/id/853540enisa_euvd
- http://www.osvdb.org/24140enisa_euvd
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