CVEvulnerability

CVE-2023-20213

4.3 MEDIUM Published 2023-11-01 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-11-01
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
CWE-787

Description

A vulnerability in the CDP processing feature of Cisco ISE could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition of the CDP process on an affected device. This vulnerability is due to insufficient bounds checking when an affected device processes CDP traffic. An attacker could exploit this vulnerability by sending crafted CDP traffic to the device. A successful exploit could cause the CDP process to crash, impacting neighbor discovery and the ability of Cisco ISE to determine the reachability of remote devices. After a crash, the CDP process must be manually restarted using the cdp enable command in interface configuration mode.

Affected configurations

• cisco identity services engine 2.7.0 • cisco identity services engine 3.0.0 • cisco identity services engine 3.1 • cisco identity services engine 3.2

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References