Cisco IOS tunneled denial of service
|ciscoios-tunneled-dos (78883)||Medium Risk|
Cisco IOS is vulnerable to a denial of service, caused by an error when handling certain tunneled packets. By sending tunneled IP packets, a remote attacker could exploit this vulnerability to cause the device to be unable to process traffic on the affected interface.
Denial of Service
Refer to cisco-sa-20120926-c10k-tunnels for patch, upgrade or suggested workaround information. See References.
- cisco-sa-20120926-c10k-tunnels: Cisco IOS Software Tunneled Traffic Queue Wedge Vulnerability .
- BID-55696: Cisco IOS Queue Wedge CVE-2012-4620 Denial of Service Vulnerability
- CVE-2012-4620: Cisco IOS 12.2 and 15.0 through 15.2 on Cisco 10000 series routers, when a tunnel interface exists, allows remote attackers to cause a denial of service (interface queue wedge) via tunneled (1) GRE/IP, (2) IPIP, or (3) IPv6 in IPv4 packets, aka Bug ID CSCts66808.
- OSVDB ID: 85811: Cisco IOS Malformed Tunneled Packet Handling Remote DoS
- SA50771: Cisco IOS Cisco 10000 Series Routers Tunneled Packets Handling Denial of Service Vulnerability
- Cisco IOS 12.4
- Cisco IOS 15.0
- Cisco IOS 15.1
- Cisco IOS 15.2
Sep 26, 2012
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