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🛡️ CVE-2023-29526 — xwiki

🔴 CVSS 9.9 — Critical ✅ No Known Exploit CWE-284 NVD
9.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

XWiki Platform's async and display macro allow displaying and interacting with any document in restricted mode

Impact

It's possible to display any page you cannot access through the combination of the async and display macro.

Steps to reproduce:

1. Enable comments for guests by giving guests comment rights

2. As a guest, create a comment with content ``{{async}}{{display reference="Menu.WebHome" /}}{{/async}}``

3. Open the comments viewer from the menu (appends ?viewer=comments to the URL)

-> the Menu.WebHome is displayed while the expectation would be to have an error that the current user is not allowed to see it

Patches

The vulnerability has been patched in XWiki 15.0-rc-1, 14.10.3, 14.4.8, and 13.10.11.

Workarounds

There is no known workaround.

References

https://jira.xwiki.org/browse/XWIKI-20394

https://jira.xwiki.org/browse/XRENDERING-694

For more information

If you have any questions or comments about this advisory:

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Changed — a successful attack reaches components beyond the vulnerable one.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2023-29526 is classified as CWE-284: Improper Access Control. The software does not restrict an action to the actors that should be allowed to perform it.

Affected software

CVE-2023-29526 is recorded against 3 packages.

  • org.xwiki.platform:xwiki-platform-oldcore (from 14.5 up to 14.10.3)
  • org.xwiki.platform:xwiki-platform-rendering-async-macro (from 14.5 up to 14.10.3)
  • xwiki (from 14.5 up to 14.10.3)

Timeline and source

Published on 20 April 2023 and last revised on 8 November 2023. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Package)
jira.xwiki.org (Web)
jira.xwiki.org (Web)

Other advisories for this package

org.xwiki.platform:xwiki-platform-oldcore has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-284: Improper Access Control) in other software:

Details

Severity CRITICAL
CVSS Score 9.9
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE CWE-284
Public Exploit ✅ No
Source NVD
Published 2023-04-20
Updated 2026-08-20
Modified 2023-11-08

Affected Packages

Software From version Fixed in
org.xwiki.platform:xwiki-platform-oldcore 14.5 14.10.3
org.xwiki.platform:xwiki-platform-rendering-async-macro 14.5 14.10.3
xwiki 14.5 14.10.3

Similar Threats

Exploit Protection

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CVE-2023-29526 carries CVSS 9.9 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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