#VU1047 Denial of service in Cisco ASA 5500-X Series - CVE-2016-6439

Vulnerability identifier: #VU1047

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-6439

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco ASA 5500-X Series
Hardware solutions / Security hardware applicances

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a remote anauthenticated user to cause DoS conditions on the target system.
The weakness is due to resource management error. By sending a specially crafted data, attackers can trigger the Snort process restart and bypass Snort detection.
Successful exploitation results in denial of service that may lead to further attacks on the vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Cisco ASA 5500-X Series: 5.4.1.5 - 6.0.0.1

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-fpsnort

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Q & A

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.