CVE-2020-3259 vulnerability in Cisco Products
Published on May 6, 2020
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Information Disclosure Vulnerability
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.
Known Exploited Vulnerability
This Cisco ASA and FTD Information Disclosure Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. 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.
The following remediation steps are recommended / required by March 7, 2024: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness Type
What is an Information Disclosure Vulnerability?
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CVE-2020-3259 has been classified to as an Information Disclosure vulnerability or weakness.
Products Associated with CVE-2020-3259
Want to know whenever a new CVE is published for Cisco products? stack.watch will email you.
Affected Versions
Cisco Adaptive Security Appliance (ASA) Software:- Version n/a is affected.
- Version 6.2.3 and below 6.2.3.16 is affected.
- Version 6.3.0 and below 6.3.0.6 is affected.
- Version 6.4.0 and below 6.4.0.9 is affected.
- Version 6.5.0 and below 6.5.0.5 is affected.
- Version 9.8 and below 9.8.4.20 is affected.
- Version 9.9 and below 9.9.2..67 is affected.
- Version 9.10 and below 9.10.1.40 is affected.
- Version 9.12 and below 9.12.3.9 is affected.
- Version 9.13 and below 9.13.1.10 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.