Apple TV 9.2.x < 9.2.1 Multiple Vulnerabilities

Versions of Apple TV 9.2.x earlier than 9.2.1 are vulnerable to the following issues :

• ‘Libxml2’ contains an out-of-bounds read flaw in the ‘xmlParseEndTag2()’ function found within ‘parser.c’. The vulnerability is triggered when parsing an end tag. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-1838)
• An out-of-bounds read flaw in the ‘xmlNextChar()’ function found within ‘parserInternals.c’ is triggered when parsing characters in an XML file. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-1833)
• An overflow condition exists within the ‘htmlParseName()’ and ‘htmlParseNameComplex()’ functions of ‘HTMLparser.c’. The issue is triggered as user-supplied input is not properly validated when parsing characters in a range. With a specially crafted file, a context-dependent attacker can cause a heap-based buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code. (CVE-2016-1839)
• A use-after-free error is triggered when handling ‘GraphicsContext’ objects in memory. With a specially crafted web page, a context-dependent attacker can dereference already freed memory and execute arbitrary code. (CVE-2016-1859)
• A use-after-free error is triggered when handling ‘TextTrack’ objects in memory. With a specially crafted web page, a context-dependent attacker can dereference already freed memory and execute arbitrary code. (CVE-2016-1856)
• A use-after-free condition is triggered as user-supplied input is not properly validated when handling ‘ArrayStorage DFG’ optimization. With a specially crafted web page, a context-dependent attacker can dereference already freed memory and execute arbitrary code. (CVE-2016-1857)