Multiple products that use International Components for Unicode (ICU) vulnerable to denial-of-service (DoS)


Multiple products that use International Components for Unicode (ICU) contain a denial-of-service (DoS) vulnerability.

International Components for Unicode (ICU) is a library for handling Unicode strings. A C version, ICU4C and a Java version ICU4J are available. Multiple products that use ICU4C contain a denial-of-service vulnerability due to a race condition.

ICU released ICU4C version 50.1.1 that addresses this vulnerability in December, 2012.
CVSS Severity (What is CVSS?)

CVSS V2 Severity:
Base Metrics 6.8 (Medium) [NVD Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

Products that use International Components for Unicode (ICU) may be vulnerable.

For more information on vulnerable products, please refer to the "Vendor Status" section.

(Multiple Venders)
  • (Multiple Products)


Impacts may vary depending on the product. In some cases, a remote attacker may cause a denial-of-service (DoS).

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Vendor Information

Google ICU project openSUSE project Oracle Corporation Cybozu, Inc. NEC Corporation
  • NEC Security Information : NV15-012 (in Japanese)
CWE (What is CWE?)

  1. Race Condition(CWE-362) [NVD Evaluation]
CVE (What is CVE?)

  1. CVE-2013-0900

  1. JVN : JVN#70739377
  2. National Vulnerability Database (NVD) : CVE-2013-0900
Revision History

  • [2013/10/30]
      Web page was updated
      Vendor Information : Content was added
      Vendor Information : Content was added