Vulnerability Description
A vulnerability in the TLS handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to gain access to sensitive information. This vulnerability is due to improper implementation of countermeasures against a Bleichenbacher attack on a device that uses SSL decryption policies. An attacker could exploit this vulnerability by sending crafted TLS messages to an affected device, which would act as an oracle and allow the attacker to carry out a chosen-ciphertext attack. A successful exploit could allow the attacker to perform cryptanalytic operations that may allow decryption of previously captured TLS sessions to the affected device.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Firepower Threat Defense | >= 6.2.3, <= 6.2.3.18 |
Related Weaknesses (CWE)
References
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ci
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ci
FAQ
What is CVE-2022-20940?
CVE-2022-20940 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A vulnerability in the TLS handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to gain access to sensitive information. This vulnerability is du...
How severe is CVE-2022-20940?
CVE-2022-20940 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-20940?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Firepower Threat Defense.