CVE-2016-10259 Denial of service in SSL Visibility

Medium 5.9 Published Updated

A malicious SSL client can exhaust the TCP connection pool of Symantec SSL Visibility servers, causing a denial of service for intercepted connections.

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-2016-10259?

CVE-2016-10259 is a medium-severity denial of service vulnerability in Symantec Corporation SSL Visibility, published on 11 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Symantec SSL Visibility (SSLV) 3.8.4FC, 3.9, 3.10 before 3.10.4.1, and 3.11 before 3.11.3.1 is susceptible to a denial-of-service vulnerability that impacts the SSL servers for intercepted SSL connections. A malicious SSL client can, under certain circumstances, temporarily exhaust the TCP connection pool of an SSL server.

Weakness: CWE-399

Which versions are affected by CVE-2016-10259?

It affects 4 products.

Products include Bluecoat Ssl Visibility Appliance Sv1800 Firmware, Bluecoat Ssl Visibility Appliance Sv2800 Firmware, Bluecoat Ssl Visibility Appliance Sv3800 Firmware, Bluecoat Ssl Visibility Appliance Sv800 Firmware.

How do I fix CVE-2016-10259?

No fix has been published for CVE-2016-10259 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-2016-10259 being exploited?

There is no known exploitation of CVE-2016-10259 in the wild and no public exploit code.

Sources

Also known as GHSA-2vpg-j5v7-47x2.

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