Vulnerability Note VU#602540

ICU Project ICU4C library contains multiple overflow vulnerabilities

Original Release date: 04 May 2015 | Last revised: 03 Aug 2015

Overview

ICU Project ICU4C library, versions 52 through 54, contains a heap-based buffer overflow and an integer overflow.

Description

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.

Impact

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.

Solution

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.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
Debian GNU/LinuxAffected30 Apr 201503 Aug 2015
FreeBSD ProjectAffected30 Apr 201501 May 2015
ICU ProjectAffected24 Apr 201504 May 2015
SAPNot Affected30 Apr 201507 May 2015
AdobeUnknown30 Apr 201530 Apr 2015
AmazonUnknown30 Apr 201530 Apr 2015
Apache HTTP Server ProjectUnknown30 Apr 201530 Apr 2015
AppleUnknown30 Apr 201530 Apr 2015
Avaya, Inc.Unknown30 Apr 201530 Apr 2015
BAE SystemsUnknown30 Apr 201530 Apr 2015
Business ObjectsUnknown30 Apr 201530 Apr 2015
Dell Computer Corporation, Inc.Unknown30 Apr 201530 Apr 2015
eBayUnknown30 Apr 201530 Apr 2015
Eclipse Foundation IncUnknown30 Apr 201530 Apr 2015
EMC CorporationUnknown30 Apr 201530 Apr 2015
If you are a vendor and your product is affected, let us know.View More »

CVSS Metrics (Learn More)

Group Score Vector
Base 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P
Temporal 3.4 E:POC/RL:OF/RC:C
Environmental 3.4 CDP:N/TD:H/CR:ND/IR:ND/AR:ND

References

Credit

Thanks to Pedro Ribeiro (pedrib@gmail.com) of Agile Information Security for reporting this vulnerability.

This document was written by Joel Land.

Other Information

  • CVE IDs: CVE-2014-8146 CVE-2014-8147
  • Date Public: 04 May 2015
  • Date First Published: 04 May 2015
  • Date Last Updated: 03 Aug 2015
  • Document Revision: 24

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