CVE-2015-4278 Denial of service in n/a

Medium 4.3 Published Updated

Remote attackers can cause email reception outages on Cisco ESA devices by sending malformed DMARC policy data via DNS.

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-2015-4278?

CVE-2015-4278 is a medium-severity denial of service vulnerability in n/a, published on 16 Jul 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Cisco Email Security Appliance (ESA) devices with software 8.5.6-106 and 9.5.0-201 allow remote attackers to cause a denial of service (per-domain e-mail reception outage) by placing malformed DMARC policy data in DNS TXT records for a domain, aka Bug ID CSCuv14806.

Weakness: CWE-20

Which versions are affected by CVE-2015-4278?

It affects 1 product.

Products include Cisco Email Security Appliance Firmware.

How do I fix CVE-2015-4278?

No fix has been published for CVE-2015-4278 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-2015-4278 being exploited?

There is no known exploitation of CVE-2015-4278 in the wild and no public exploit code.

Sources

Also known as GHSA-j467-jvch-4wxp.

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