CVE-2023-29202

Public Exploit
org.xwiki.platform:xwiki-platform-rendering-macro-rss Cross-site Scripting vulnerability

Description

XWiki Commons are technical libraries common to several other top level XWiki projects. The RSS macro that is bundled in XWiki included the content of the feed items without any cleaning in the HTML output when the parameter `content` was set to `true`. This allowed arbitrary HTML and in particular also JavaScript injection and thus cross-site scripting (XSS) by specifying an RSS feed with malicious content. With the interaction of a user with programming rights, this could be used to execute arbitrary actions in the wiki, including privilege escalation, remote code execution, information disclosure, modifying or deleting content and sabotaging the wiki. The issue has been patched in XWiki 14.6 RC1, the content of the feed is now properly cleaned before being displayed. As a workaround, if the RSS macro isn't used in the wiki, the macro can be uninstalled by deleting `WEB-INF/lib/xwiki-platform-rendering-macro-rss-XX.jar`, where `XX` is XWiki's version, in the web application's directory.

Category

9.0
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 2.41% Top 20%
Vendor Advisory github.com Vendor Advisory xwiki.org
Affected: xwiki xwiki-platform
Published at:
Updated at:

References

Link Tags
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-c885-89fw-55qr patch vendor advisory exploit
https://github.com/xwiki/xwiki-platform/commit/5c7ebe47c2897e92d8f04fe2e15027e84dc3ec03 patch
https://jira.xwiki.org/browse/XWIKI-19671 vendor advisory issue tracking exploit

Frequently Asked Questions

What is the severity of CVE-2023-29202?
CVE-2023-29202 has been scored as a critical severity vulnerability.
How to fix CVE-2023-29202?
To fix CVE-2023-29202, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-29202 being actively exploited in the wild?
It is possible that CVE-2023-29202 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-29202?
CVE-2023-29202 affects xwiki xwiki-platform.
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