CVE-2024-45591: xwiki Auth Bypass — Exploit & Fix

Description

XWiki Platform is a generic wiki platform. The REST API exposes the history of any page in XWiki of which the attacker knows the name. The exposed information includes for each modification of the page the time of the modification, the version number, the author of the modification (both username and displayed name) and the version comment. This information is exposed regardless of the rights setup, and even when the wiki is configured to be fully private. On a private wiki, this can be tested by accessing /xwiki/rest/wikis/xwiki/spaces/Main/pages/WebHome/history, if this shows the history of the main page then the installation is vulnerable. This has been patched in XWiki 15.10.9 and XWiki 16.3.0RC1.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-359 CWE-359

CWE-862 Missing Authorization

Affected Products

Vendor	Product	Versions
xwiki	xwiki	1.8 — 15.10.9
xwiki	xwiki	16.0.0 — 16.3.0

References

Advisories & Patches

https://github.com/xwiki/xwiki-platform/commit/26482ee5d29fc21f31134d1ee13db48716e89e0f https://github.com/xwiki/xwiki-platform/commit/9cbca9808300797c67779bb9a665d85cf9e3d4b8 https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-pvmm-55r5-g3mm https://jira.xwiki.org/browse/XWIKI-22052

Exploits

https://jira.xwiki.org/browse/XWIKI-22052

Frequently Asked Questions

What is CVE-2024-45591? +

XWiki Platform is a generic wiki platform. The REST API exposes the history of any page in XWiki of which the attacker knows the name. The exposed information includes for each modification of the page the time of the modification, the version number, the author of the modification (both username and displayed name) and the version comment. This information is exposed regardless of the rights setup, and even when the wiki is configured to be fully private. On a private wiki, this can be tested by accessing /xwiki/rest/wikis/xwiki/spaces/Main/pages/WebHome/history, if this shows the history of the main page then the installation is vulnerable. This has been patched in XWiki 15.10.9 and XWiki 16.3.0RC1. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2024-45591? +

CVE-2024-45591 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-45591? +

CVE-2024-45591 affects products from xwiki, specifically: xwiki. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-45591? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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