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HIGH SEVERITY Ransomware Linked
CVE-2020-3259 Cisco · Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)

Cisco ASA and FTD Information Disclosure Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

HIGH
7.5 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitation Likelihood

EPSS Prediction

69.73 %
Predictive Probability
Percentile Rank
98.6 th

Documented as more likely to be exploited than 98.6% of known CVEs.

Detection Date

Feb 15, 2024

Remediation Due

Mar 07, 2024

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

External Intelligence

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-info-disclose-9eJtycMB

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-info-disclose-9eJtycMB
NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2020-3259