Vulnerability Monitor

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CVE-2023-20233

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.

Published

2023-09-13T17:15:09.523

Last Modified

2024-11-21T07:40:57.257

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.3 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-476
  • Type: Primary
    CWE-354
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios_xr < 7.5.4 Yes
Operating System cisco ios_xr < 7.6.3 Yes
Operating System cisco ios_xr < 7.7.21 Yes
Operating System cisco ios_xr < 7.8.2 Yes
Operating System cisco ios_xr 7.9.0 Yes
References