XWiki Platform CSRF via REST API enabling RCE (Fixed in 14.10.8/15.2)
CVE-2023-37277 Published on July 10, 2023
XWiki Platform vulnerable to cross-site request forgery (CSRF) via the REST API
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. The REST API allows executing all actions via POST requests and accepts `text/plain`, `multipart/form-data` or `application/www-form-urlencoded` as content types which can be sent via regular HTML forms, thus allowing cross-site request forgery. With the interaction of a user with programming rights, this allows remote code execution through script macros and thus impacts the integrity, availability and confidentiality of the whole XWiki installation. For regular cookie-based authentication, the vulnerability is mitigated by SameSite cookie restrictions but as of March 2023, these are not enabled by default in Firefox and Safari. The vulnerability has been patched in XWiki 14.10.8 and 15.2 by requiring a CSRF token header for certain request types that are susceptible to CSRF attacks.
Vulnerability Analysis
CVE-2023-37277 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Session Riding Vulnerability?
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. When a web server is designed to receive a request from a client without any mechanism for verifying that it was intentionally sent, then it might be possible for an attacker to trick a client into making an unintentional request to the web server which will be treated as an authentic request. This can be done via a URL, image load, XMLHttpRequest, etc. and can result in exposure of data or unintended code execution.
CVE-2023-37277 has been classified to as a Session Riding vulnerability or weakness.
Products Associated with CVE-2023-37277
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Affected Versions
xwiki-platform:- Version >= 1.8, < 14.10.8 is affected.
- Version >= 15.0-rc-1, < 15.2 is affected.
Vulnerable Packages
The following package name and versions may be associated with CVE-2023-37277
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| maven | org.xwiki.platform:xwiki-platform-rest-server | >= 1.8, < 14.10.8 | 14.10.8 |
| maven | com.xpn.xwiki.platform:xwiki-core-rest-server | >= 1.8, < 14.10.8 | 14.10.8 |
| maven | com.xpn.xwiki.platform:xwiki-rest | >= 1.8, < 14.10.8 | 14.10.8 |
| maven | org.xwiki.platform:xwiki-platform-rest-server | >= 15.0-rc-1, < 15.2 | 15.2 |
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.