QID 317425

QID 317425: Cisco IOS XR Software Layer 2 Services Denial of Service (DoS) Vulnerability (cisco-sa-xrl2vpn-jesrU3fc)

A vulnerability in the Layer 2 Ethernet services of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the line card network processor to reset, resulting in a denial of service (DoS) condition.

Affected Products
Cisco IOS XR Software releases prior to 7.9.2
Cisco IOS XR Software releases From 7.10 prior to 7.10.1

QID Detection Logic (Authenticated):
The check matches Cisco IOS XR version retrieved via Unix Auth using "show version" command.
Note: This QID does not checks for service policy or access-control filtering mechanism that examines the IP headers

A successful exploit could allow the attacker to cause the ingress interface network processor to reset, resulting in a loss of traffic over the interfaces that are supported by the network processor.

CVSS V3 rated as High - 7.4 severity.

CVSS V2 rated as Medium - 4.6 severity.

Solution

Customers are advised to refer cisco-sa-xrl2vpn-jesrU3fc for more information.

Vendor References

cisco-sa-xrl2vpn-jesrU3fc - sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrl2vpn-jesrU3fc

CVEs related to QID 317425

CVE-2024-20318 |

Software Advisories

Advisory ID	Software	Component	Link
cisco-sa-xrl2vpn-jesrU3fc			sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrl2vpn-jesrU3fc

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