CVE-2023-4527

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    CVE-2023-4527

    Published: 18 Sept 2023Last Modified: 16 Apr 2026

    Summary:

    Details: A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048 bytes can potentially disclose stack contents through the function returned address data, and may cause a crash.

    References: https://access.redhat.com/errata/RHSA-2023:5453, https://access.redhat.com/security/cve/CVE-2023-4527, http://www.openwall.com/lists/oss-security/2023/09/25/1, https://lists.fedoraproject.org/archives/list/[email protected]/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/, https://lists.fedoraproject.org/archives/list/[email protected]/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/, https://security.gentoo.org/glsa/202310-03, https://security.netapp.com/advisory/ntap-20231116-0012/, https://access.redhat.com/errata/RHSA-2023:5455, https://lists.fedoraproject.org/archives/list/[email protected]/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/, https://bugzilla.redhat.com/show_bug.cgi?id=2234712

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2023-4527 | CVE-DB