Remote code execution via XSLT extension functions
Published Apr 3, 2023 · Updated Aug 2, 2024
Code injection in HtmlUnit before 3.0.0 allows remote attackers to execute arbitrary Java code when the library browses a crafted webpage. XSLTProcessor creates a JAXP TransformerFactory without secure processing, leaving Xalan Java extension functions enabled for attacker-supplied stylesheets. Exploitation requires an application to load the attacker's page with HtmlUnit; the stylesheet can invoke Java runtime methods in that application's process.
Summary
What happened
Code injection in HtmlUnit before 3.0.0 allows remote attackers to execute arbitrary Java code when the library browses a crafted webpage. XSLTProcessor creates a JAXP TransformerFactory without secure processing, leaving Xalan Java extension functions enabled for attacker-supplied stylesheets. Exploitation requires an application to load the attacker's page with HtmlUnit; the stylesheet can invoke Java runtime methods in that application's process.
The record
- CVE
- CVE-2023-26119
- Published
- Apr 3, 2023
- Updated
- Aug 2, 2024
- Vendor
- HtmlUnit
- Product
- HtmlUnit
- Classifications
- CWE-94, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 3, 2023CVE publishedPublication date reported by the CVE source.
- Aug 2, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <3.0.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- HtmlUnit-RCE proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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