CVE-2012-4437 Cross-site Scripting in SmartyException

Medium 4.3 Published Updated

Remote attackers can inject arbitrary web script or HTML via unspecified vectors triggering exceptions in the Smarty PHP templating library.

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
Available

What is CVE-2012-4437?

CVE-2012-4437 is a medium-severity cross-site scripting vulnerability in n/a, published on 1 Oct 2012. 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

Cross-site scripting (XSS) vulnerability in the SmartyException class in Smarty (aka smarty-php) before 3.1.12 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors that trigger a Smarty exception.

Weakness: CWE-79

Which versions are affected by CVE-2012-4437?

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

PackageAffectedFixed in
smarty/smarty PackagistAll versions3.1.12
smarty/smarty PackagistAll versions3.1.12

Products include Smarty Smarty.

How do I fix CVE-2012-4437?

Upgrade smarty/smarty to 3.1.12 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2012-4437 being exploited?

There is no known exploitation of CVE-2012-4437 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2012-4437, GHSA-9gqj-ppv2-f2hq.

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