Vulnerability identifier: #VU57756
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
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
ASA 5500-X Series Firewalls
Other software /
Other software solutions
Vendor: Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when processing HTTP requests sent to the SSL VPN interface. A remote attacker can send a specially crafted config-request HTTP request and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Cisco Adaptive Security Appliance (ASA): 9.15.1.7 - 9.16.1.28
ASA 5500-X Series Firewalls: All versions
Cisco Firepower Threat Defense (FTD): 7.0.0, 6.7.0 - 6.7.0.2
External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asafdt-webvpn-dos-KSqJAKPA
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCvy58278
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.