Software Engineering Institute

The ICU Project describes ICU as "a mature, widely used set of C/C++ and Java libraries providing Unicode and Globalization support for software applications."

CWE-122: Heap-based Buffer Overflow - CVE-2014-8146

Multiple out-of-bounds writes may occur in the resolveImplicitLevels function of ubidi.c in affected versions of ICU4C.

CWE-190: Integer Overflow or Wraparound - CVE-2014-8147

An integer overflow may occur in the resolveImplicitLevels function of ubidi.c in affected versions of ICU4C due to the assignment of an int32 value to an int16 type.

Both issues may lead to denial of service and the possibility of code execution. For more details, refer to Pedro Ribeiro's disclosure.

An attacker may be able to provide input that triggers one or both overflow vulnerabilities, leading to denial of service and the possibility of code execution.

Apply an update

These issues have been addressed in ICU4C version 55.1. Developers are encouraged to update applications that make use of affected versions of ICU4C. Users of affected products should check with product vendors for updates that utilize a patched version of ICU4C.