The REXML parser in Ruby 1.9.x before 1.9.3 patchlevel 551, 2.0.x
before 2.0.0 patchlevel 598, and 2.1.x before 2.1.5 allows remote
attackers to cause a denial of service (CPU and memory consumption) a
crafted XML document containing an empty string in an entity that is
used in a large number of nested entity references, aka an XML Entity
Expansion (XEE) attack. NOTE: this vulnerability exists because of an
incomplete fix for CVE-2013-1821 and CVE-2014-8080.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
Disclaimer: The entry creation date may reflect when
the CVE-ID was allocated or reserved, and does not
necessarily indicate when this vulnerability was
discovered, shared with the affected vendor, publicly
disclosed, or updated in CVE.
This is an entry on the CVE
list, which standardizes names for security