Vulnerability identifier: #VU62471
Vulnerability risk: Medium
CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-345
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 compromsie the target system.
The vulnerability exists due to suboptimal processing that occurs when establishing a Datagram TLS (DTLS) tunnel as part of an AnyConnect SSL VPN connection. A remote attacker can send specially crafted DTLS traffic and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Cisco Adaptive Security Appliance (ASA): 9.16.3 - 9.17.1.9
Cisco Firepower Threat Defense (FTD): 7.0.1, 7.1.0.1
External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vpndtls-dos-TunzLEV
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.