XWiki XAR Import CVE-2023-27480: Exfil via Forged XAR (fixed 13.10.11/14.4.7)
CVE-2023-27480 Published on March 7, 2023
Data leak through a XAR import XXE attack in xwiki-platform-xar-model
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions any user with edit rights on a document can trigger an XAR import on a forged XAR file, leading to the ability to display the content of any file on the XWiki server host. This vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1. Users are advised to upgrade. Users unable to upgrade may apply the patch `e3527b98fd` manually.
Vulnerability Analysis
CVE-2023-27480 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
What is a XXE Vulnerability?
The software processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
CVE-2023-27480 has been classified to as a XXE vulnerability or weakness.
Products Associated with CVE-2023-27480
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Affected Versions
xwiki-platform:- Version >= 1.1-milestone-3, < 13.10.11 is affected.
- Version >= 14.0.0, < 14.4.7 is affected.
- Version >= 14.5.0, < 14.10.0-rc-1 is affected.
Vulnerable Packages
The following package name and versions may be associated with CVE-2023-27480
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| maven | org.xwiki.platform:xwiki-platform-xar-model | >= 1.1-milestone-3, < 13.10.11 | 13.10.11 |
| maven | org.xwiki.platform:xwiki-platform-xar-model | >= 14.0, < 14.4.7 | 14.4.7 |
| maven | org.xwiki.platform:xwiki-platform-xar-model | >= 14.5, < 14.10-rc-1 | 14.10-rc-1 |
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.