CVE-2023-39343 Sulu Observable Response Discrepancy on Admin Login

Medium 4.3 Published Updated

An attacker can enumerate valid usernames via the admin login form, revealing which users exist in the system.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2023-39343?

CVE-2023-39343 is a medium-severity vulnerability in sulu, published on 4 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Sulu is an open-source PHP content management system based on the Symfony framework. It allows over the Admin Login form to detect which user (username, email) exists and which one do not exist. Sulu Installation not using the old Symfony 5.4 security System and previous version are not impacted by this Security issue. The vulnerability has been patched in version 2.5.10.

Weakness: CWE-204

Which versions are affected by CVE-2023-39343?

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

PackageAffectedFixed in
sulu/sulu PackagistFrom 2.5.02.5.10
sulu/sulu PackagistFrom 2.5.02.5.10

Products include Sulu Sulu.

How do I fix CVE-2023-39343?

Upgrade sulu/sulu to 2.5.10 or later.

Is CVE-2023-39343 being exploited?

There is no known exploitation of CVE-2023-39343 in the wild and no public exploit code.

Sources

Also known as GHSA-wmwf-49vv-p3mr.

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