A vulnerability in the implementation of Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote malicious user to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain BGP update messages. An attacker could exploit this vulnerability by sending BGP update messages that include a specific, malformed attribute to be processed by an affected system. A successful exploit could allow the malicious user to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim's BGP network on an existing, valid TCP connection to a BGP peer.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
cisco ios_xr 6.0.1 |
||
cisco ios_xr 6.1.1 |
||
cisco ios_xr 6.2.2 |
||
cisco ios_xr 6.4.1 |
||
cisco ios_xr 6.1.2 |
||
cisco ios_xr 6.1.3 |
||
cisco ios_xr 6.1.4 |
||
cisco ios_xr 6.2.1 |
||
cisco ios_xr 6.0.2 |
||
cisco ios_xr 6.2.3 |
Vulmon