Buffer overflow in Cisco Identity Services Engine Software
CVE-2023-20213
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.003 (20.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Cisco Identity Services Engine Software — versions 2.6.0, 2.6.0 p1, 2.6.0 p2
- Cisco Identity Services Engine — versions 2.7.0, 3.0.0, 3.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2023-20213?
- CVE-2023-20213 is a medium-severity vulnerability in Cisco Identity Services Engine Software, classified under Out-of-bounds Write. CVSS score: 4.3/10. Published 2023-11-01.
- How severe is CVE-2023-20213?
- Medium severity. CVSS v3 base score is 4.3 out of 10.