CVE-2015-8566 Joomla! Framework Remote Code Injection Vulnerability

High 7.5 Published Updated

Remote attackers can execute arbitrary code via malicious session values in the Joomla Framework Session package.

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

What is CVE-2015-8566?

CVE-2015-8566 is a high-severity unsafe deserialization vulnerability in n/a, published on 16 Dec 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Session package 1.x before 1.3.1 for Joomla! Framework allows remote attackers to execute arbitrary code via unspecified session values.

Which versions are affected by CVE-2015-8566?

2 open source packages ship an affected version, including joomla/session. It affects 1 product.

PackageAffectedFixed in
joomla/session PackagistAll versions1.3.1
joomla/session PackagistAll versions1.3.1

Products include Joomla Session.

How do I fix CVE-2015-8566?

Upgrade joomla/session to 1.3.1 or later.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2015-8566 being exploited?

There is no known exploitation of CVE-2015-8566 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as GHSA-wwfh-28hx-w2r2.

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