CVE-2023-35158 XWiki Platform vulnerable to reflected cross-site scripting via xredirect parameter in restore template

Critical 9.7 Published Updated

Attackers can inject JavaScript via the xredirect parameter in the restore template, allowing reflected cross-site scripting attacks against XWiki users.

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-2023-35158?

CVE-2023-35158 is a critical cross-site scripting vulnerability in Xwiki Xwiki, published on 23 Jun 2023. 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

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Users are able to forge an URL with a payload allowing to inject Javascript in the page (XSS). It's possible to exploit the restore template to perform a XSS, e.g. by using URL such as: > /xwiki/bin/view/XWiki/Main?xpage=restore&showBatch=true&xredirect=javascript:alert(document.domain). This vulnerability exists since XWiki 9.4-rc-1. The vulnerability has been patched in XWiki 14.10.5 and 15.1-rc-1.

Weakness: CWE-87

Which versions are affected by CVE-2023-35158?

4 open source packages ship an affected version, including org.xwiki.platform:xwiki-platform-flamingo-skin-resources. It affects 1 product.

PackageAffectedFixed in
org.xwiki.platform:xwiki-platform-flamingo-skin-resources MavenFrom 15.0-rc-115.1-rc-1
org.xwiki.platform:xwiki-platform-flamingo-skin-resources MavenFrom 15.0-rc-115.1-rc-1
org.xwiki.platform:xwiki-platform-flamingo-skin-resources MavenFrom 9.4-rc-114.10.5
org.xwiki.platform:xwiki-platform-flamingo-skin-resources MavenFrom 9.4-rc-114.10.5

Products include Xwiki Xwiki.

How do I fix CVE-2023-35158?

Upgrade org.xwiki.platform:xwiki-platform-flamingo-skin-resources to a fixed version for your release line: 15.1-rc-1 or 14.10.5.

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-2023-35158 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-35158 exists.

Public exploit code: 1 Nuclei template.

All Xwiki Xwiki vulnerabilities

Sources

Also known as GHSA-mwxj-g7fw-7hc8.

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