CVE-2022-36100 XWiki Platform Applications Tag and XWiki Platform Tag UI vulnerable to Eval Injection

Critical 9.9 Published Updated

Attackers can execute arbitrary code and bypass security controls in XWiki due to improper input sanitization in tag applications, affecting public or authenticated users.

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-2022-36100?

CVE-2022-36100 is a critical code injection vulnerability in Xwiki Xwiki, published on 8 Sep 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

XWiki Platform Applications Tag and XWiki Platform Tag UI are tag applications for XWiki, a generic wiki platform. Starting with version 1.7 in XWiki Platform Applications Tag and prior to 13.10.6 and 14.4 in XWiki Platform Tag UI, the tags document `Main.Tags` in XWiki didn't sanitize user inputs properly. This allowed users with view rights on the document (default in a public wiki or for authenticated users on private wikis) to execute arbitrary Groovy, Python and Velocity code with programming rights. This also allowed bypassing all rights checks and thus both modification and disclosure of all content stored in the XWiki installation. The vulnerability could be used to impact the availability of the wiki. On XWiki versions before 13.10.4 and 14.2, this can be combined with CVE-2022-36092, meaning that no rights are required to perform the attack. The vulnerability has been patched in versions 13.10.6 and 14.4. As a workaround, the patch that fixes the issue can be manually applied to the document `Main.Tags` or the updated version of that document can be imported from version 14.4 of xwiki-platform-tag-ui using the import feature in the administration UI on XWiki 10.9 and later.

Weakness: CWE-116, CWE-95, CWE-94

Which versions are affected by CVE-2022-36100?

6 open source packages ship an affected version, including org.xwiki.platform:xwiki-platform-tag-ui and org.xwiki.platform.applications:xwiki-application-tag. It affects 1 product.

PackageAffectedFixed in
org.xwiki.platform:xwiki-platform-tag-ui MavenAll versions13.10.6
org.xwiki.platform:xwiki-platform-tag-ui MavenAll versions13.10.6
org.xwiki.platform:xwiki-platform-tag-ui MavenFrom 14.014.4
org.xwiki.platform:xwiki-platform-tag-ui MavenFrom 14.014.4
org.xwiki.platform.applications:xwiki-application-tag MavenFrom 1.7None
org.xwiki.platform.applications:xwiki-application-tag MavenFrom 1.7None

Products include Xwiki Xwiki.

How do I fix CVE-2022-36100?

Upgrade org.xwiki.platform:xwiki-platform-tag-ui to a fixed version for your release line: 13.10.6 or 14.4.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2022-36100 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-36100 exists.

All Xwiki Xwiki vulnerabilities

Sources

Also known as GHSA-2g5c-228j-p52x.

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