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VULNERABILITIES

CVE-2023-20233 Details

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.

Metrics

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xr-cfm-3pWN8MKt CVEVendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xr-cfm-3pWN8MKt [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-354Improper Validation of Integrity Check Value[email protected]
CWE-476NULL Pointer Dereference[email protected]

Affected Products

ProductVersions
cisco ios xr
< 7.5.4
>= 7.6, < 7.6.3
>= 7.7, < 7.7.21
>= 7.8, < 7.8.2
7.9.0

CPE

  • cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xr:7.9.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2023-20233
NVD Published Date:
Sep 13, 2023
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2023-20233 Details - Not Deferred