A vulnerability in the implementation of Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected system. 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 set of attributes to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic from explicitly defined peers only. 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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2019-07-06T01:20:14.693033Z

Updated: 2024-11-21T19:19:47.050Z

Reserved: 2018-12-06T00:00:00

Link: CVE-2019-1909

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-07-06T02:15:11.527

Modified: 2019-10-09T23:48:31.613

Link: CVE-2019-1909

cve-icon Redhat

No data.