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

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Date: Tue, 19 Jul 2022 19:53:10 -0700
From: Roxana Bradescu <roxxbee@...il.com>
To: oss-security@...ts.openwall.com
Cc: mjc@...che.org
Subject: Re: CVE-2022-34169: Apache Xalan Java XSLT library is
 vulnerable to an integer truncation issue when processing malicious XSLT
 stylesheets


> On Jul 19, 2022, at 12:21 PM, John Helmert III <ajak@...too.org> wrote:
> 
> On Tue, Jul 19, 2022 at 05:37:46PM +0000, Mark J. Cox wrote:
>> 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
>> 
> 
> Hi, is there any available patch or bug report? The reference here
> only seems to be a discussion of the retirement of xalan-j, rather
> than the vulnerability.

Project Zero won't share technical details of a vulnerability for 30 days if a vendor patches it before the 90-day or 7-day deadline. The 30-day period is intended for user patch adoption.
https://googleprojectzero.blogspot.com/2021/04/policy-and-disclosure-2021-edition.html <https://googleprojectzero.blogspot.com/2021/04/policy-and-disclosure-2021-edition.html>

Since OpenJDK released patches for this vulnerability today, PZ would publish technical details in 30 days.
https://openjdk.org/groups/vulnerability/advisories/2022-07-19 <https://openjdk.org/groups/vulnerability/advisories/2022-07-19>

—
Regards, Roxana



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