Resource exhaustion in Cisco Firepower Management Center
CVE-2023-20155
A vulnerability in a logging API in Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to cause the device to become unresponsive or trigger an unexpected reload. This vulnerability could also allow an attacker with valid user credentials, but not Administrator privileges, to view a system log file that they would not normally have access to. This vulnerability is due to a lack of rate-limiting of requests that are sent to a specific API that is related to an FMC log. An attacker could exploit this vulnerability by sending a high rate of HTTP requests to the API. A successful exploit could allow the attacker to cause a denial of service (DoS) condition due to the FMC CPU spiking to 100 percent utilization or to the device reloading. CPU utilization would return to normal if the attack traffic was stopped before an unexpected reload was triggered.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Cisco Firepower Management Center — versions 6.2.3, 6.2.3.1, 6.2.3.2
- Cisco Secure Firewall Management Center
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2023-20155?
- CVE-2023-20155 is a high-severity vulnerability in Cisco Firepower Management Center, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2023-11-01.
- How severe is CVE-2023-20155?
- High severity. CVSS v3 base score is 7.5 out of 10.