CVE-2023-20155
First published: Wed Nov 01 2023(Updated: )
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.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Firepower Management Center | >=6.2.3<=6.2.3.18 | |
| Cisco Firepower Management Center | >=6.4.0<=6.4.0.16 | |
| Cisco Firepower Management Center | >=6.6.0<=6.6.7.1 | |
| Cisco Firepower Management Center | >=7.0.0<=7.0.5 | |
| Cisco Firepower Management Center | >=7.1.0<=7.1.0.3 | |
| Cisco Firepower Management Center | >=7.2.0<=7.2.3.1 | |
| Cisco Firepower Management Center | >=7.3.0<=7.3.1.1 |
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Reference Links
Frequently Asked Questions
What is CVE-2023-20155?
CVE-2023-20155 is a vulnerability in a logging API in Cisco Firepower Management Center (FMC) Software that could allow an attacker to cause the device to become unresponsive or trigger a reload.
How can an attacker exploit CVE-2023-20155?
An attacker can exploit CVE-2023-20155 by sending malicious requests to the affected device's logging API.
What is the severity of CVE-2023-20155?
CVE-2023-20155 has a severity rating of 7.5 (high).
Which versions of Cisco Firepower Management Center Software are affected by CVE-2023-20155?
Versions 6.2.3 to 6.2.3.18, 6.4.0 to 6.4.0.16, 6.6.0 to 6.6.7.1, 7.0.0 to 7.0.5, 7.1.0 to 7.1.0.3, 7.2.0 to 7.2.3.1, and 7.3.0 to 7.3.1.1 of Cisco Firepower Management Center Software are affected by CVE-2023-20155.
How can CVE-2023-20155 be fixed?
To fix CVE-2023-20155, Cisco Firepower Management Center Software users should upgrade to a fixed software release.
- agent/type
- agent/first-publish-date
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/weakness
- agent/author
- agent/last-modified-date
- agent/references
- agent/tags
- agent/event
- agent/description
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- vendor/cisco
- canonical/cisco firepower management center
- version/cisco firepower management center/6.2.3
- version/cisco firepower management center/6.2.3.18
- version/cisco firepower management center/6.4.0
- version/cisco firepower management center/6.4.0.16
- version/cisco firepower management center/6.6.0
- version/cisco firepower management center/6.6.7.1
- version/cisco firepower management center/7.0.0
- version/cisco firepower management center/7.0.5
- version/cisco firepower management center/7.1.0
- version/cisco firepower management center/7.1.0.3
- version/cisco firepower management center/7.2.0
- version/cisco firepower management center/7.2.3.1
- version/cisco firepower management center/7.3.0
- version/cisco firepower management center/7.3.1.1