Vulnerability identifier: #VU47883
Vulnerability risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-285
Exploitation vector: Network
Exploit availability: No
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 bypass authorization checks.
The vulnerability exists due to insufficient validation of URLs when portal access rules are configured. A remote attacker can access certain URLs on the affected device, bypass a configured access rule and access parts of the WebVPN portal that are supposed to be blocked.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Cisco Adaptive Security Appliance (ASA): 9.6 - 9.14
Cisco Firepower Threat Defense (FTD): 6.2.3, 6.3.0, 6.4.0, 6.5.0, 6.6.0, 6.2.2
External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-rule-bypass-P73ABNWQ
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.