CVE-2016-4309 Auth bypass in n/a

High 7.5 Published Updated

Attackers can hijack user sessions in Symphony CMS if PHP session cookies are not enforced, requiring configuration changes to mitigate.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2016-4309?

CVE-2016-4309 is a high-severity authentication bypass vulnerability in n/a, published on 30 Jun 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Session fixation vulnerability in Symphony CMS 2.6.7, when session.use_only_cookies is disabled, allows remote attackers to hijack web sessions via the PHPSESSID parameter.

Weakness: CWE-362

Which versions are affected by CVE-2016-4309?

It affects 1 product.

Products include Getsymphony Symphony.

How do I fix CVE-2016-4309?

No fix has been published for CVE-2016-4309 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2016-4309 being exploited?

There is no known exploitation of CVE-2016-4309 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as GHSA-rgfr-7g9m-xpr3.

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