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.

The active exploitation of a known flaw in Cisco ASA and FTD by the Akira ransomware group warrants attention for organizations that have yet to patch this flaw from May 2020.

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.

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A vulnerability exists in the web services interface of Cisco Adaptive Security Appliance (ASA) Software due to the handling of parsing of invalid URLs. An unauthenticated, remote attacker can exploit this, by sending a crafted GET request to the web services interface, in order to retrieve memory contents, which could lead to the disclosure of confidential information.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
506194	Cisco ASA Exposure of Sensitive Information to an Unauthorized Actor (CVE-2020-3259)	Tenable OT Security	Tenable.ot	Remote	high
137659	Cisco Adaptive Security Appliance Software Web Services Information Disclosure (cisco-sa-asaftd-info-disclose-9eJtycMB)	Nessus	CISCO	Local	high

Detections

Analytics

CVE-2020-3259

high

Tenable Plugins

high

high