Vulnerability identifier: #VU27592

Vulnerability risk: High

CVSSv3.1: 8.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-3187

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Cisco Adaptive Security Appliance (ASA)
Hardware solutions / Security hardware applicances
Cisco Firepower Threat Defense (FTD)
Hardware solutions / Security hardware applicances

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the web services interface. A remote attacker can send a specially crafted HTTP request and read or delete arbitrary files on the targeted system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Cisco Adaptive Security Appliance (ASA): 9.5 - 9.13

Cisco Firepower Threat Defense (FTD): 6.2.3, 6.3.0, 6.4.0, 6.5.0

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-path-JE3azWw43

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.