XWiki Legacy Notify Macro RCE, fixed 13.10.11/14.4.7/14.10
CVE-2023-29209 Published on April 15, 2023
org.xwiki.platform:xwiki-platform-legacy-notification-activitymacro Eval Injection vulnerability
XWiki Commons are technical libraries common to several other top level XWiki projects. Any user with view rights on commonly accessible documents including the legacy notification activity macro can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the macro parameters of the legacy notification activity macro. This macro is installed by default in XWiki. The vulnerability can be exploited via every wiki page that is editable including the user's profile, but also with just view rights using the HTMLConverter that is part of the CKEditor integration which is bundled with XWiki. The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10.
Vulnerability Analysis
CVE-2023-29209 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2023-29209. 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 an Eval Injection Vulnerability?
The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval"). This may allow an attacker to execute arbitrary code, or at least modify what code can be executed.
CVE-2023-29209 has been classified to as an Eval Injection vulnerability or weakness.
Products Associated with CVE-2023-29209
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Affected Versions
xwiki-platform:- Version >= 10.9, < 13.10.11 is affected.
- Version >= 14.0-rc-1, < 14.4.7 is affected.
- Version >= 14.5, < 14.10 is affected.
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.