Vulnerability identifier: #VU99328
Vulnerability risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-772
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 perform a denial of service (DoS) attack.
The vulnerability exists due to ineffective handling of memory resources during the authentication process within the login authentication functionality of the Remote Access SSL VPN feature. A remote attacker can cause a denial of service condition on the target system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Cisco Adaptive Security Appliance (ASA): 6.4.0 - 6.4.0.18, 7.0.0 - 7.0.6.2, 7.2.0 - 7.2.8.1, 7.4.0 - 7.4.2, 6.6.0 - 6.6.7.2, 7.3.0 - 7.3.1.2, 9.16.1 - 9.16.4.62, 9.18.1 - 9.18.4.34, 9.20.1 - 9.20.2.22, 9.12.1 - 9.12.4.67, 9.14.1 - 9.14.4.24, 9.17.1 - 9.17.1.39, 9.19.1 - 9.19.1.31, 6.2.3 - 6.2.3.18, 6.7.0 - 6.7.0.3, 7.1.0 - 7.1.0.3, 9.8.1 - 9.8.4.48, 9.15.1 - 9.15.1.21
Cisco Firepower Threat Defense (FTD): 9.12.4 - 9.12.4.67, 9.16.4 - 9.16.4.62, 9.17.1 - 9.17.1.39, 9.18.4 - 9.18.4.34, 9.19.1 - 9.19.1.31, 9.20.2 - 9.20.2.22, 9.14.4 - 9.14.4.24, 7.2.8 - 7.2.8.1, 7.4.2, 6.4.0 - 6.4.0.18, 7.0.0 - 7.0.6.2, 7.2.5 - 7.2.5.2, 7.4.1 - 7.4.1.1, 6.6.0 - 6.6.7.2, 7.3.1 - 7.3.1.2, 7.2.6, 7.2.7, 7.4.0, 9.18.3 - 9.18.3.56, 9.20.1 - 9.20.1.5, 6.2.3 - 6.2.3.18, 7.1.0 - 7.1.0.3, 7.2.4 - 7.2.4.1, 7.3.0, 9.18.2 - 9.18.2.8, 9.8.4 - 9.8.4.48, 7.2.3, 7.2.2, 9.16.3 - 9.16.3.23, 9.18.1 - 9.18.1.3, 9.16.2 - 9.16.2.14, 9.12.1 - 9.12.1.3, 9.12.2 - 9.12.2.9, 9.12.3 - 9.12.3.12, 9.14.1 - 9.14.1.30, 9.14.2 - 9.14.2.15, 9.14.3 - 9.14.3.18, 9.15.1 - 9.15.1.21, 9.16.1 - 9.16.1.28, 9.8.1 - 9.8.1.7, 9.8.2 - 9.8.2.45, 9.8.3 - 9.8.3.29, 7.2.1, 7.2.0 - 7.2.0.1, 6.7.0 - 6.7.0.3
External links
http://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-vpn-4gYEWMKg
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.