CVE-2015-6421 Denial of service in n/a

High 7.5 Published Updated

Remote attackers can cause denial of service and device reload on Cisco WAAS devices via crafted network traffic.

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-2015-6421?

CVE-2015-6421 is a high-severity denial of service vulnerability in n/a, published on 27 Jan 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

cifs-ao in the CIFS optimization functionality on Cisco Wide Area Application Service (WAAS) and Virtual WAAS (vWAAS) devices 5.x before 5.3.5d and 5.4 and 5.5 before 5.5.3 allows remote attackers to cause a denial of service (resource consumption and device reload) via crafted network traffic, aka Bug ID CSCus85330.

Weakness: CWE-399

Which versions are affected by CVE-2015-6421?

It affects 1 product.

Products include Cisco Wide Area Application Services.

How do I fix CVE-2015-6421?

No fix has been published for CVE-2015-6421 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-2015-6421 being exploited?

There is no known exploitation of CVE-2015-6421 in the wild and no public exploit code.

Sources

Also known as GHSA-6f4r-2cf4-2gv2.

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