cve/2014/CVE-2014-8147.md

CVE-2014-8147

Description

The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C in International Components for Unicode (ICU) before 55.1 uses an integer data type that is inconsistent with a header file, which allows remote attackers to cause a denial of service (incorrect malloc followed by invalid free) or possibly execute arbitrary code via crafted text.

POC

Reference

• http://bugs.icu-project.org/trac/changeset/37080
• http://openwall.com/lists/oss-security/2015/05/05/6
• http://seclists.org/fulldisclosure/2015/May/14
• http://www.kb.cert.org/vuls/id/602540
• http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
• http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html

Github

• https://github.com/ARPSyndicate/cvemon