Title: Cisco IOS HTTP %% Vulnerability
Severity: HIGH
Description:
A denial of service attack exists in versions of Cisco IOS, running on a variety of different router hardware. If the router is configured to have a web server running, for configuration and other information, via "ip http server" in the configuration, then by requesting:
http://<router-ip>/%%
A remote attacker can cause the router to crash. Some routers will automatically reboot, while others will require a power cycling to start routing packets again.
Affected Products:
- Cisco IOS 11.1
- Cisco IOS 11.2
- Cisco IOS 11.2(17)
- Cisco IOS 11.2.10
- Cisco IOS 11.2.10BC
- Cisco IOS 11.2.4F1
- Cisco IOS 11.2.8
- Cisco IOS 11.2.8P
- Cisco IOS 11.2.9P
- Cisco IOS 11.2.9XA
- Cisco IOS 11.2P
- Cisco IOS 11.3
- Cisco IOS 11.3.1
- Cisco IOS 11.3.1ED
- Cisco IOS 11.3.1T
- Cisco IOS 11.3T
- Cisco IOS 12.0
- Cisco IOS 12.0(5)T1
- Cisco IOS 12.0(7)T
- Cisco IOS 12.0(8)
- Cisco IOS 12.0(9)S
- Cisco IOS 12.0.1W
- Cisco IOS 12.0.1XA3
- Cisco IOS 12.0.1XB
- Cisco IOS 12.0.1XE
- Cisco IOS 12.0.2
- Cisco IOS 12.0.2XC
- Cisco IOS 12.0.2XD
- Cisco IOS 12.0.2XF
- Cisco IOS 12.0.2XG
- Cisco IOS 12.0.3T2
- Cisco IOS 12.0.4
- Cisco IOS 12.0.4S
- Cisco IOS 12.0.4T
- Cisco IOS 12.0.5
- Cisco IOS 12.0.6
- Cisco IOS 12.0.7
- Cisco IOS 12.0DB
- Cisco IOS 12.0S
- Cisco IOS 12.0T
References:
- Cisco: Cisco Security Advisory: Cisco IOS HTTP Server Vulnerability
- Cisco Systems: Cisco Product Security Incident Response
Juniper Networks provides this content via a wide variety of sources and production methods. If notified of errors or omissions in the content of this page, Juniper Networks, at its discretion, will modify or remove the page or leave the content as is, depending on various factors including but not limited to the reputation and authority of the party providing the notification. Please use the contact information displayed elsewhere on this page to report any errors or omissions regarding the content on this page.
