CVE-2017-12132

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    CVE-2017-12132

    Published: 1 Aug 2017Last Modified: 28 Aug 2026

    Summary:

    Details: The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.

    References: http://www.securityfocus.com/bid/100598, https://access.redhat.com/errata/RHSA-2018:0805, https://arxiv.org/pdf/1205.4011.pdf, https://sourceware.org/bugzilla/show_bug.cgi?id=21361

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    glibc-2.25

    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