CVE-2013-0340 – Apple Security Advisory 2021-10-26-11

https://notcve.org/view.php?id=CVE-2013-0340

21 Jan 2014 — expat 2.1.0 and earlier does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issu... • http://openwall.com/lists/oss-security/2013/02/22/3 • CWE-611: Improper Restriction of XML External Entity Reference •