Cisco ASA and FTD Information Disclosure Vulnerability

A remote attacker, without authentication, can achieve full data confidentiality loss. CISA has confirmed use of this vulnerability in known ransomware campaigns — treat as high priority for remediation. Federal agencies are required to remediate by 2024-03-07 under CISA BOD 22-01.

This is a Information Disclosure (CWE-200) vulnerability in Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD). A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to retrieve memory contents on an affected device, which could lead to the disclosure of confidential information. The vulnerability is due to a buffer tracking issue when the software parses invalid URLs that are requested from the web services interface. An attacker could exploit this vulnerability by sending a crafted GET request to the web services interface. A successful exploit could allow the attacker to retrieve memory contents, which could lead to the disclosure of confidential information. Note: This vulnerability affects only specific AnyConnect and WebVPN configurations. For more information, see the Vulnerable Products section. Exploitation requires remote network access, low attack complexity, no authentication required, and no user interaction required.

Probably yes if any of these apply:

CISA confirms this CVE has been used in known ransomware campaigns. Added to the KEV catalog on 2024-02-15; federal agencies required to remediate by 2024-03-07.