Description
Cisco IOS 2.2(18)EW, 12.2(18)EWA, 12.2(14)SZ, 12.2(18)S, 12.2(18)SE, 12.2(18)SV, 12.2(18)SW, and other versions without the "no service dhcp" command, keep undeliverable DHCP packets in the queue instead of dropping them, which allows remote attackers to cause a denial of service (dropped traffic) via multiple undeliverable DHCP packets that exceed the input queue size.
References
- oval:org.mitre.oval:def:5632 vdb-entry signature
- TA04-316A third-party-advisory
- 20041110 Cisco Security Advisory: Cisco IOS DHCP Blocked Interface Denial-of-Service vendor-advisory
- VU#630104 third-party-advisory
- cisco-ios-dhcp-dos(18021) vdb-entry
- P-034 third-party-advisory government-resource