CVE-2021-43835 Privilege escalation in the Sulu Admin panel

What is CVE-2021-43835?

CVE-2021-43835 is a high-severity vulnerability in sulu, published on 15 Dec 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Sulu is an open-source PHP content management system based on the Symfony framework. In affected versions Sulu users who have access to any subset of the admin UI are able to elevate their privilege. Over the API it was possible for them to give themselves permissions to areas which they did not already had. This issue was introduced in 2.0.0-RC1 with the new ProfileController putAction. The versions have been patched in 2.2.18, 2.3.8 and 2.4.0. For users unable to upgrade the only known workaround is to apply a patch to the ProfileController manually.

Weakness: CWE-269

Which versions are affected by CVE-2021-43835?

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

Products include Sulu Sulu.

How do I fix CVE-2021-43835?

Upgrade sulu/sulu to a fixed version for your release line: 2.2.18, 2.3.8 or 2.4.0.

Is CVE-2021-43835 being exploited?

There is no known exploitation of CVE-2021-43835 in the wild and no public exploit code.

Other vulnerabilities in sulu

• CVE-2021-43836 PHP file inclusion in the Sulu admin panel High 8.5
• CVE-2021-32737 XSS Injection in Media Collection Title was possible High 8.4
• CVE-2024-27915 Sulu grants access to pages regardless of role permissions Medium 6.8
• CVE-2021-41169 Improper Neutralization HTML tags in sulu/sulu Medium 6.2
• CVE-2024-47617 Reflected XSS Vulnerability in Sulu Media Bundle Medium 6.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-84px-q68r-2fc9.