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    CVE-2019-18224

    idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.

    Published:Jan 7, 2019
    Last Modified:Nov 21, 2024
    EPS:Oct 21, 2019
    EPSS Score:0.02397
    CVSS Score:9.8

    Affected Products

    Vendor
    Gnu
    Product
    Libidn2
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12420https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12420

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    References

    http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00008.html
    http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00009.html
    https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12420
    https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8c
    https://github.com/libidn/libidn2/compare/libidn2-2.1.0...libidn2-2.1.1
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDQVQ2XPV5BTZUFINT7AFJSKNNBVURNJ/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MINU5RKDFE6TKAFY5DRFN3WSFDS4DYVS/
    https://seclists.org/bugtraq/2020/Feb/4
    https://security.gentoo.org/glsa/202003-63
    https://usn.ubuntu.com/4168-1/
    https://www.debian.org/security/2020/dsa-4613
    http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00008.html
    http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00009.html
    https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12420
    https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8c
    https://github.com/libidn/libidn2/compare/libidn2-2.1.0...libidn2-2.1.1
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDQVQ2XPV5BTZUFINT7AFJSKNNBVURNJ/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MINU5RKDFE6TKAFY5DRFN3WSFDS4DYVS/
    https://seclists.org/bugtraq/2020/Feb/4
    https://security.gentoo.org/glsa/202003-63
    https://usn.ubuntu.com/4168-1/
    https://www.debian.org/security/2020/dsa-4613

    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