CVE-2015-3196 Race condition in n/a

Medium 4.3 Published Updated

Remote servers can cause denial of service in multi-threaded OpenSSL clients via a race condition and double free in PSK identity hint handling.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2015-3196?

CVE-2015-3196 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 6 Dec 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

ssl/s3_clnt.c in OpenSSL 1.0.0 before 1.0.0t, 1.0.1 before 1.0.1p, and 1.0.2 before 1.0.2d, when used for a multi-threaded client, writes the PSK identity hint to an incorrect data structure, which allows remote servers to cause a denial of service (race condition and double free) via a crafted ServerKeyExchange message.

Weakness: CWE-362

Which versions are affected by CVE-2015-3196?

It affects 13 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Hp Icewall Sso, Hp Icewall Sso Agent Option, Openssl Openssl and 7 more.

How do I fix CVE-2015-3196?

Upgrade to a fixed version.

Is CVE-2015-3196 being exploited?

There is no known exploitation of CVE-2015-3196 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2015-3196, GHSA-wj5w-hq6m-54g7, UBUNTU-CVE-2015-3196.

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