Cisco releases a bundled publication to address 12 vulnerabilities across Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD), including a critical path traversal vulnerability. Update 05/09/20: This blog has been updated to remove references about Firepower Management Center (FMC) software, as Cisco have confirmed that it is not affected.

Cisco Patches Multiple Flaws in Adaptive Security Appliance and Firepower Threat Defense (CVE-2020-3187)

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 conduct directory traversal attacks and obtain read and delete access to sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of the HTTP URL. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences. An exploit could allow the attacker to view or delete arbitrary files on the targeted system. When the device is reloaded after exploitation of this vulnerability, any files that were deleted are restored. The attacker can only view and delete files within the web services file system. This file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability can not be used to obtain access to ASA or FTD system files or underlying operating system (OS) files. Reloading the affected device will restore all files within the web services file system.

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 conduct directory traversal attacks and obtain read and delete access to sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of the HTTP URL. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences. An exploit could allow the attacker to view or delete arbitrary files on the targeted system. When the device is reloaded after exploitation of this vulnerability, any files that were deleted are restored. The attacker can only view and delete files within the web services file system.
This file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability can not be used to obtain access to ASA or FTD system files or underlying operating system (OS) files. Reloading the affected device will restore all files within the web services file system.

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A vulnerability exists in the web services interface of Cisco Firepower Threat Defense (FTD) Software due to a lack of proper input validation of the HTTP URL. An unauthenticated, remote attacker can exploit this, by sending a crafted HTTP request containing directory traversal character sequences, in order to view or delete arbitrary files on the targeted system within the web services file system.

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.

A vulnerability exists in the web services interface of Cisco Adaptive Security Appliance (ASA) Software due to a lack of proper input validation of the HTTP URL. An unauthenticated, remote attacker can exploit this, by sending a crafted HTTP request containing directory traversal character sequences, in order to view or delete arbitrary files on the targeted system within the web services file system.

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.

A vulnerability in the Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to conduct directory traversal attack and obtain read and delete access to sensitive files on a targeted system.

ID	Name	Product	Family	Type	Severity
506067	Cisco ASA Path Traversal (CVE-2020-3187)	Tenable OT Security	Tenable.ot	Remote	critical
136915	Cisco Firepower Threat Defense Software Web Services Path Traversal (cisco-sa-asaftd-path-JE3azWw43)	Nessus	CISCO	Local	critical
136914	Cisco Adaptive Security Appliance Software Web Services Path Traversal (cisco-sa-asaftd-path-JE3azWw43)	Nessus	CISCO	Local	critical
720319	Rockwell Automation Stratix 5950 Industrial EtherNet/IP Security Appliance <= 16.4 Directory Traversal Attack	Nessus Network Monitor	SCADA		critical

Detections

Analytics

CVE-2020-3187

critical

Tenable Plugins

critical

critical

critical

critical