What’s Vulnerable › Vulnerabilities

CVE-2014-8146

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 24.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2015-05-25 · updated 2026-06-17
• Weakness: CWE-119

Description

The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C in International Components for Unicode (ICU) before 55.1 does not properly track directionally isolated pieces of text, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly execute arbitrary code via crafted text.

Affected products

• Apple Iphone Os: through 8.2
• Apple iTunes for Windows: through 12.1.3
• macOS: through 10.10.4
• Apple watchOS: through 1.0.1
• Icu-Project International Components For Unicode: before 55.1 — fixed in 55.1

How to fix

Upgrade to a fixed version: Icu-Project International Components For Unicode 55.1. Check the vendor advisory for mitigations.

References

• http://bugs.icu-project.org/trac/changeset/37162
• http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html
• http://lists.apple.com/archives/security-announce/2015/Sep/msg00003.html
• http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html
• http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
• http://openwall.com/lists/oss-security/2015/05/05/6
• http://seclists.org/fulldisclosure/2015/May/14
• http://www.debian.org/security/2015/dsa-3323
• http://www.kb.cert.org/vuls/id/602540
• http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
• http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
• http://www.securityfocus.com/bid/74457

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