oss-security - CVE requested: two stack exhaustation parsing xml files using mxml

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Message-ID: <CACn5sdRgkmEjLHf4-QejK6x8LSNupa4XKj3N_izTUBjt=HFFbw@mail.gmail.com>
Date: Sat, 7 May 2016 23:40:38 +0200
From: Gustavo Grieco <gustavo.grieco@...il.com>
To: oss-security@...ts.openwall.com
Subject: CVE requested: two stack exhaustation parsing xml files using mxml

Hi,

We found two stack exhustation conditions that can easily crash mxml
when parsing an xml. Both issues are affecting versions 2.7 and 2.9
(and probably others):

* Recursion using mxmlDelete at mxml-node.c:217 (stack-exhaustion-1.xml)
* Recursion using mxml_write_node at mxml-file.c:2739 (stack-exhaustion-2.xml)

Found using QuickFuzz + Radamsa. Reproducers are attached.

Regards,
Gustavo.

Download attachment "reproducers.tar.gz" of type "application/x-gzip" (2175 bytes)

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