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CVE-2022-34169: Apache Xalan Java XSLT library is vulnerable to an integer truncation issue when processing malicious XSLT stylesheets

From: "Mark J. Cox" <mjc () apache org>
Date: Tue, 19 Jul 2022 17:37:46 +0000

Description:

The Apache Xalan Java XSLT library is vulnerable to an integer truncation issue when processing malicious XSLT 
stylesheets. This can be used to corrupt Java class files generated by the internal XSLTC compiler and execute 
arbitrary Java bytecode.

The Apache Xalan Java project is dormant and in the process of being retired. No future releases of Apache Xalan Java 
to address this issue are expected.

Note: Java runtimes (such as OpenJDK) include repackaged copies of Xalan.

Credit:

Reported by Felix Wilhelm, Google Project Zero

References:

https://lists.apache.org/thread/2qvl7r43wb4t8p9dd9om1bnkssk07sn8

Current thread:

CVE-2022-34169: Apache Xalan Java XSLT library is vulnerable to an integer truncation issue when processing malicious XSLT stylesheets Mark J. Cox (Jul 19)
- Re: CVE-2022-34169: Apache Xalan Java XSLT library is vulnerable to an integer truncation issue when processing malicious XSLT stylesheets John Helmert III (Jul 19)
  - Re: CVE-2022-34169: Apache Xalan Java XSLT library is vulnerable to an integer truncation issue when processing malicious XSLT stylesheets Roxana Bradescu (Jul 20)
  - Re: CVE-2022-34169: Apache Xalan Java XSLT library is vulnerable to an integer truncation issue when processing malicious XSLT stylesheets Moritz Muehlenhoff (Jul 20)