CVE-2022-20940
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 0.8% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.8% in the next 30 days (EPSS).
- Severity: 5.3 MEDIUM (CVSS).
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 0.8% · EPSS, next 30 days
- Weakness
- CWE-203
- Record status
- Modified
Affected
- Cisco Secure Firewall Threat Defense ≤ 6.2.3.18
- Cisco Secure Firewall Threat Defense ≤ 6.3.0.5
- Cisco Secure Firewall Threat Defense ≤ 6.4.0.14
- Cisco Secure Firewall Threat Defense ≤ 6.5.0.5
- Cisco Secure Firewall Threat Defense ≤ 6.7.0.3
- Cisco Secure Firewall Threat Defense ≤ 7.0.3
- Cisco Secure Firewall Threat Defense 6.6.0
- Cisco Secure Firewall Threat Defense 6.6.0.1
Attack profile CVSS 3.1 · 5.3
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-20940.md and follow it. Check whether this project is affected by CVE-2022-20940. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
