CVE-2016-6465 Security feature bypass in Cisco AsyncOS

Medium 4.3 Published 14 Dec 2016 Updated 6 Aug 2024

Unauthenticated attackers can bypass content filters on Cisco Email and Web Security Appliances if scanning services are enabled.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2016-6465?

CVE-2016-6465 is a medium-severity vulnerability in Cisco Email Security Appliance, published on 14 Dec 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A vulnerability in the content filtering functionality of Cisco AsyncOS Software for Cisco Email Security Appliances and Cisco Web Security Appliances could allow an unauthenticated, remote attacker to bypass user filters that are configured for an affected device. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for both virtual and hardware versions of the following Cisco products: Cisco Email Security Appliances (ESAs) that are configured to use message or content filters that scan incoming email attachments; Cisco Web Security Appliances (WSAs) that are configured to use services that scan accessed web content. More Information: CSCva90076, CSCvb06764. Known Affected Releases: 10.0.0-125 8.5.7-042 9.7.2-047.

Weakness: CWE-20

Which versions are affected by CVE-2016-6465?

It affects 1 product.

Products include Cisco Email Security Appliance.

How do I fix CVE-2016-6465?

No fix has been published for CVE-2016-6465 yet. Limit exposure of the affected software until one is available.

Is CVE-2016-6465 being exploited?

There is no known exploitation of CVE-2016-6465 in the wild and no public exploit code.

All Cisco Email Security Appliance vulnerabilities

Sources

Also known as GHSA-wff9-q6wf-8f5q.