Denial of service in Cisco ASA 5500-X Series

1) Denial of service

EUVDB-ID: #VU778

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-6424

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated user to cause DoS conditions on the target system.

The weakness exists due to improper resource processing. A specially crafted DHCP packets sent by the attackers at specific rates can trigger the target interface to seize up and stop incoming traffic handling.

Successful exploitation of the vulnerability results in denial of service on the vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Cisco ASA 5500-X Series: 9.1.7.4 - 100.15.0.112

Cisco Adaptive Security Appliance (ASA): 8.4.7.29 - 9.2.4.9

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-asa-dhcp

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.