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    CVE-2014-8146

    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.

    Published:May 5, 2015
    Last Modified:Apr 12, 2025
    EPS:May 25, 2015
    EPSS Score:0.40134
    CVSS Score:7.5

    Affected Products

    Vendor
    Apple
    Product
    Iphone Os
    Vendor
    Apple
    Product
    Itunes
    Vendor
    Apple
    Product
    Mac Os X
    Vendor
    Apple
    Product
    Watchos
    Vendor
    Icu-project
    Product
    International Components For Unicode

    Exploits

    http://seclists.org/fulldisclosure/2015/May/14https://raw.githubusercontent.com/pedrib/PoC/master/generic/i-c-u-fail.txthttp://seclists.org/fulldisclosure/2015/May/14https://raw.githubusercontent.com/pedrib/PoC/master/generic/i-c-u-fail.txthttps://www.exploit-db.com/exploits/43887

    Related CVEs

    CVE-2026-87545 (CVSS 6.5) — Information leak in Mobile in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker leverag…
    CVE-2026-87609 (CVSS 9.6) — Use after free in Sharing in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker to execu…
    CVE-2026-87518 (CVSS 5.3) — Observable discrepancy in Safebrowsing in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote atta…
    CVE-2026-87482 (CVSS 5.9) — Cleartext transmission of sensitive data in HttpsUpgrades in Google Chrome on on iOS prior to 153.0.8010.36 al…
    CVE-2026-87517 (CVSS 3.1) — Race condition in Mobile in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker leveragin…
    CVE-2026-85047 (CVSS 9.6) — Improper input validation in Transactions Platform in Google Chrome on on iOS prior to 152.0.7977.82 allowed a…
    CVE-2026-78964 (CVSS 9.6) — Use after free in Sync in Google Chrome on on iOS prior to 152.0.7977.65 allowed a remote attacker to potentia…
    CVE-2026-78957 (CVSS 5.5) — Information leak in Mobile in Google Chrome on on iOS prior to 152.0.7977.65 allowed a local attacker to obtai…
    CVE-2026-78981 (CVSS 6.5) — Information leak in Mobile in Google Chrome on on iOS prior to 152.0.7977.65 allowed a local attacker to poten…
    CVE-2026-79105 (CVSS 4.3) — Improper input validation in Mobile in Google Chrome on on iOS prior to 152.0.7977.65 allowed a remote attacke…

    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
    https://raw.githubusercontent.com/pedrib/PoC/master/generic/i-c-u-fail.txt
    https://security.gentoo.org/glsa/201507-04
    https://support.apple.com/HT205212
    https://support.apple.com/HT205213
    https://support.apple.com/HT205221
    https://support.apple.com/HT205267
    https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
    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
    https://raw.githubusercontent.com/pedrib/PoC/master/generic/i-c-u-fail.txt
    https://security.gentoo.org/glsa/201507-04
    https://support.apple.com/HT205212
    https://support.apple.com/HT205213
    https://support.apple.com/HT205221
    https://support.apple.com/HT205267
    https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High