GHSA-m5q3-mvcr-gc5m silverstripe/framework BackURL validation bypass with malformed URLs

Not scored Published

Attackers can bypass offsite redirection protection via malformed URLs, potentially tricking users into entering sensitive data on malicious sites.

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 GHSA-m5q3-mvcr-gc5m?

GHSA-m5q3-mvcr-gc5m is a vulnerability in silverstripe/framework, published on 27 May 2024. 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

A carefully constructed malformed URL can be used to circumvent the offsite redirection protection used on BackURL parameters. This could lead to users entering sensitive data in malicious websites instead of the intended one.

Which versions are affected by GHSA-m5q3-mvcr-gc5m?

4 open source packages ship an affected version, including silverstripe/framework.

PackageAffectedFixed in
silverstripe/framework PackagistFrom 4.0.0-rc14.0.4
silverstripe/framework PackagistFrom 4.0.0-rc14.0.4
silverstripe/framework PackagistFrom 4.1.0-rc14.1.1
silverstripe/framework PackagistFrom 4.1.0-rc14.1.1

How do I fix GHSA-m5q3-mvcr-gc5m?

Upgrade silverstripe/framework to a fixed version for your release line: 4.0.4 or 4.1.1.

Is GHSA-m5q3-mvcr-gc5m being exploited?

There is no known exploitation of GHSA-m5q3-mvcr-gc5m in the wild and no public exploit code.

Sources

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