Detections
Analytics
Cisco Firepower Threat Defense Software SSL Decryption Policy Bleichenbacher Attack (cisco-sa-ftd-tls-bb-rCgtmY2)
medium Nessus Plugin ID 173792
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
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.Please see the included Cisco BID and Cisco Security Advisory for more information.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwa41936See Also
Plugin Details
Severity: Medium
ID: 173792
File Name: cisco-sa-ftd-tls-bb-rCgtmY2.nasl
Version: 1.1
Type: local
Family: CISCO
Published: 4/3/2023
Updated: 4/4/2023
Configuration: Enable paranoid mode
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 1.4
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2022-20940
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Temporal Score: 4.6
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:cisco:firepower_threat_defense
Required KB Items: Settings/ParanoidReport, installed_sw/Cisco Firepower Threat Defense
Exploit Ease: No known exploits are available
Patch Publication Date: 11/9/2022
Vulnerability Publication Date: 11/9/2022
Reference Information
CVE: CVE-2022-20940