A vulnerability in the Connectivity Fault Management (CFM) feature of...

4.3 CVSS

Vulnerability Description

A vulnerability in the Connectivity Fault Management (CFM) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to incorrect processing of invalid continuity check messages (CCMs). An attacker could exploit this vulnerability by sending crafted CCMs to an affected device. A successful exploit could allow the attacker to cause the CFM service to crash when a user displays information about maintenance end points (MEPs) for peer MEPs on an affected device.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xr-cfm-3pWN8MKt

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Affected Vendor

Cisco

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Affected Software

Cisco IOS XR Software

Vulnerable Versions:

5.2.0, 5.2.1, 5.2.2, 5.2.4, 5.2.3, 5.2.5, 5.3.0, 5.3.1, 5.3.2, 5.3.3, 5.3.4, 6.1.1, 6.1.2, 6.1.3, 6.1.4, 6.2.1, 6.2.2, 6.2.3, 6.2.25, 6.3.2, 6.3.3, 6.3.15, 6.4.1, 6.4.2, 6.4.3, 6.5.1, 6.5.2, 6.6.2, 6.6.3, 6.6.25, 6.6.4, 7.0.1, 7.0.2, 7.1.1, 7.1.15, 7.1.2, 7.1.3, 6.7.1, 6.7.2, 6.7.3, 6.7.4, 7.2.1, 7.2.2, 7.3.1, 7.3.2, 7.3.3, 7.4.1, 7.4.2, 6.8.1, 6.8.2, 7.5.1, 7.5.3, 7.5.2, 7.6.1, 7.6.2, 7.7.1, 7.7.2, 6.9.1, 6.9.2