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Vulnerability · Published Aug 23, 2023 · Assigned by GitHub_M

CVE-2023-40177XWiki Platform privilege escalation (PR) from account through AWM content fields

Critical 9.9

In plain English

A critical-severity security flaw in xwiki-platform from xwiki. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)1.1%top 35.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Any registered user can use the content field of their user profile page to execute arbitrary scripts with programming rights, thus effectively performing rights escalation. This issue is present since version 4.3M2 when AppWithinMinutes Application added support for the Content field, allowing any wiki page (including the user profile page) to use its content as an AWM Content field, which has a custom displayer that executes the content with the rights of the ``AppWithinMinutes.Content`` author, rather than the rights of the content author. The vulnerability has been fixed in XWiki 14.10.5 and 15.1RC1. The fix is in the content of the AppWithinMinutes.Content page that defines the custom displayer. By using the ``display`` script service to render the content we make sure that the proper author is used for access rights checks.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenorg.xwiki.platform:xwiki-platform-appwithinminutes-ui14.10.5GHSA-5mf8-v43w-mfxp

Affected products (as reported)

VendorProductVersions
xwiki xwiki-platform >= 4.3-milestone-2, < 14.10.5

Weakness: CWE-95 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

References