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TI-2011-03965 Aliases CVE-2011-4599GHSA-95hv-27rj-qc2p

Stack-based buffer overflow in the _canonicalize function in common/uloc.c in…

Priority MEDIUM 44CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.07914 94th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:*before 49.1VulnerableIcu-project
  • cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:* Versions before 49.1 Vulnerable ·Icu-project

Remediation

Red Hat 1 advisory

  • RHSA-2011:1815 Released 2011-12-13 · Red Hat rating Moderate
    icu security update
    • RHEL Desktop Workstation (v. 5 client) icu-3.6-5.16.1, libicu-devel-3.6-5.16.1, libicu-devel-3.6-5.16.1.i386
    • Red Hat Enterprise Linux (v. 5 server) icu-3.6-5.16.1, icu-3.6-5.16.1.i386, icu-3.6-5.16.1.ia64 +13
    • Red Hat Enterprise Linux Desktop (v. 5 client) icu-3.6-5.16.1, icu-3.6-5.16.1.i386, libicu-3.6-5.16.1 +3
    • Red Hat Enterprise Linux Desktop (v. 6) icu-4.2.1-9.1.el6_2, libicu-4.2.1-9.1.el6_2
    • Red Hat Enterprise Linux Desktop Optional (v. 6) icu-4.2.1-9.1.el6_2, libicu-devel-4.2.1-9.1.el6_2, libicu-doc-4.2.1-9.1.el6_2
    • Red Hat Enterprise Linux HPC Node (v. 6) icu-4.2.1-9.1.el6_2, libicu-4.2.1-9.1.el6_2
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) icu-4.2.1-9.1.el6_2, libicu-devel-4.2.1-9.1.el6_2, libicu-doc-4.2.1-9.1.el6_2
    • Red Hat Enterprise Linux Server (v. 6) icu-4.2.1-9.1.el6_2, libicu-4.2.1-9.1.el6_2, libicu-4.2.1-9.1.el6_2.ppc
    • Red Hat Enterprise Linux Server Optional (v. 6) icu-4.2.1-9.1.el6_2, libicu-devel-4.2.1-9.1.el6_2, libicu-devel-4.2.1-9.1.el6_2.ppc +1
    • Red Hat Enterprise Linux Workstation (v. 6) icu-4.2.1-9.1.el6_2, libicu-4.2.1-9.1.el6_2
    • Red Hat Enterprise Linux Workstation Optional (v. 6) icu-4.2.1-9.1.el6_2, libicu-devel-4.2.1-9.1.el6_2, libicu-doc-4.2.1-9.1.el6_2

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
RHEL Desktop Workstation (v. 5 client)Fixed RHSA-2011:1815
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2011:1815
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2011:1815
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2011:1815
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2011:1815
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2011:1815
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2011:1815
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2011:1815
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2011:1815
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2011:1815
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2011:1815

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-4599
  2. 2026-10-03 Alias added: GHSA-95hv-27rj-qc2p

References

Advisory 11

Other 3

  • TI-2014-06761 The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional… CVSS 2.0HIGH 7.5
  • TI-2014-06762 The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional… CVSS 2.0HIGH 7.5
  • TI-2016-06316 Stack-based buffer overflow in the Locale class in common/locid.cpp in International… CVSS 3.0CRITICAL 9.8
  • TI-2014-08077 Stack-based buffer overflow in the ures_getByKeyWithFallback function in… CVSS 3.0CRITICAL 9.8
  • TI-2017-10973 Double free in i18n/zonemeta.cpp in International Components for Unicode (ICU) for C/C++… CVSS 3.0CRITICAL 9.8
  • TI-2016-05387 The uloc_acceptLanguageFromHTTP function in common/uloc.cpp in International Components… CVSS 3.0CRITICAL 9.8
See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences