CVE-2011-4599

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-06-21 · updated 2026-06-16
Weakness: CWE-119

Description

Stack-based buffer overflow in the _canonicalize function in common/uloc.c in International Components for Unicode (ICU) before 49.1 allows remote attackers to execute arbitrary code via a crafted locale ID that is not properly handled during variant canonicalization.

Affected products

Icu-Project International Components For Unicode: before 49.1 — fixed in 49.1

How to fix

Upgrade to a fixed version: Icu-Project International Components For Unicode 49.1. Check the vendor advisory for mitigations.

References

http://bugs.icu-project.org/trac/ticket/8984
http://code.google.com/p/chromium/issues/detail?id=106441
http://lists.apple.com/archives/security-announce/2012/Sep/msg00003.html
http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
http://lists.opensuse.org/opensuse-updates/2012-01/msg00035.html
http://rhn.redhat.com/errata/RHSA-2011-1815.html
http://secunia.com/advisories/47146
http://secunia.com/advisories/47227
http://secunia.com/advisories/47674
http://secunia.com/advisories/47714
http://secunia.com/advisories/47775
http://support.apple.com/kb/HT5501

Get alerted when CVE-2011-4599 or the next vulnerability affects your stack