Cisco IOS-XR: CVE-2024-20317: Cisco IOS XR Software Network Convergence System Denial of Service Vulnerability

Cisco IOS-XR: CVE-2024-20317: Cisco IOS XR Software Network Convergence System Denial of Service Vulnerability

Severity

6

CVSS

(AV:A/AC:L/Au:N/C:N/I:N/A:C)

Published

09/11/2024

Created

09/13/2024

Added

09/12/2024

Modified

11/13/2024

Description

A vulnerability in the handling of specific Ethernet frames by Cisco IOS XR Software for various Cisco Network Convergence System (NCS) platforms could allow an unauthenticated, adjacent attacker to cause critical priority packets to be dropped, resulting in a denial of service (DoS) condition. This vulnerability is due to incorrect classification of certain types of Ethernet frames that are received on an interface. An attacker could exploit this vulnerability by sending specific types of Ethernet frames to or through the affected device. A successful exploit could allow the attacker to cause control plane protocol relationships to fail, resulting in a DoS condition. For more information, see thesection of this advisory. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Solution(s)

• update-xros

References

• https://attackerkb.com/topics/cve-2024-20317
• CVE - 2024-20317
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-l2services-2mvHdNuC
• cisco-sa-l2services-2mvHdNuC