Cisco ASA and FTD Information Disclosure
What to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA deadline 2024-03-07 · passed 2 years 6 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an information disclosure vulnerability. An attacker could retrieve memory contents on an affected device, which could lead to the disclosure of confidential information due to a buffer tracking issue when the software parses invalid URLs that are requested from the web services interface. This vulnerability affects only specific AnyConnect and WebVPN configurations.
Who is affected
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD). Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-200.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 2 years 6 months ago
Sources
- NVD entry for CVE-2020-3259 nvd.nist.gov/vuln/detail/CVE-2020-3259
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- tools.cisco.com tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-info-disclose-9eJtycMB
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2020-3259