The Protocol Translation (PT) functionality in Cisco IOS 12.3 through 12.4 and 15.0 through 15.3, when one-step port-23 translation or a Telnet-to-PAD ruleset is configured, does not properly validate TCP connection information, which allows remote attackers to cause a denial of service (device reload) via an attempted connection to a PT resource, aka Bug ID CSCtz35999.
2013-03-28T23:55:01.627
2025-04-11T00:51:21.963
Deferred
CVSSv2: 7.8 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:C
10.0
6.9
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Operating System | cisco | ios | 12.3 | Yes |
Operating System | cisco | ios | 12.4 | Yes |
Operating System | cisco | ios | 15.0 | Yes |
Operating System | cisco | ios | 15.1 | Yes |
Operating System | cisco | ios | 15.2 | Yes |
Operating System | cisco | ios | 15.3 | Yes |