Description
The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with malformed UTF-8 sequences that trigger a buffer over-read, related to the doProlog function in lib/xmlparse.c, a different vulnerability than CVE-2009-2625 and CVE-2009-3720.
Remediation
References
Related Vulnerabilities
WordPress 4.3.x Arbitrary File Deletion Vulnerability (4.3 - 4.3.16)
WebLogic Improper Handling of Exceptional Conditions Vulnerability (CVE-2017-5638)
WordPress Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2013-2202)
IBM WebSEAL Use of Hard-coded Credentials Vulnerability (CVE-2018-1887)
Apache Tomcat Improper Input Validation Vulnerability (CVE-2016-1240)