International Components for Unicode: User-assisted execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201209-07 / icu
Release Date	September 24, 2012
Latest Revision	September 24, 2012: 1
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
dev-libs/icu	< 49.1.1-r1	>= 49.1.1-r1	All supported architectures

Related bugreports: #394201

Synopsis

A buffer overflow in International Components for Unicode could result in execution of arbitrary code or Denial of Service.

2. Impact Information

Background

International Components for Unicode (ICU) is a set of C/C++ and Java libraries providing Unicode and Globalization support for software applications.

Description

An error in the _canonicalize() function in uloc.cpp could cause a stack-based buffer overflow.

Impact

A remote attacker could entice a user to open a specially crafted locale representation using an application linked against ICU, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All ICU users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-libs/icu-49.1.1-r1"

4. References

CVE-2011-4599

Page updated September 24, 2012

Summary: This is a Gentoo Linux Security Advisory

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