CVE-2016-1481 Denial of service in Cisco AsyncOS through 9.7.0-125

High 7.5 Published 28 Oct 2016 Updated 5 Aug 2024

Unauthenticated remote attackers can cause a denial of service on Cisco Email Security Appliances if specific message filter rules are configured.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2016-1481?

CVE-2016-1481 is a high-severity denial of service vulnerability in Cisco Email Security Appliance, published on 28 Oct 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the email message filtering feature of Cisco AsyncOS Software for Cisco Email Security Appliances could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Email Security Appliances, both virtual and hardware appliances, if the software is configured to apply a message filter that contains certain rules. More Information: CSCux59873. Known Affected Releases: 8.5.6-106 9.1.0-032 9.7.0-125. Known Fixed Releases: 9.1.1-038 9.7.1-066.

Weakness: CWE-20

Which versions are affected by CVE-2016-1481?

It affects 1 product.

Products include Cisco Email Security Appliance.

How do I fix CVE-2016-1481?

No fix has been published for CVE-2016-1481 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2016-1481 being exploited?

There is no known exploitation of CVE-2016-1481 in the wild and no public exploit code.

All Cisco Email Security Appliance vulnerabilities

Sources

Also known as GHSA-rv7c-p5pc-3252.