CVE-2018-1000001

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    CVE-2018-1000001

    Published: 31 Jan 2018Last Modified: 28 Aug 2026

    Summary:

    Details: In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.

    References: http://seclists.org/oss-sec/2018/q1/38, http://www.securityfocus.com/bid/102525, http://www.securitytracker.com/id/1040162, https://access.redhat.com/errata/RHSA-2018:0805, https://security.netapp.com/advisory/ntap-20190404-0003/, https://usn.ubuntu.com/3534-1/, https://usn.ubuntu.com/3536-1/, https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/, https://www.exploit-db.com/exploits/43775/, https://www.exploit-db.com/exploits/44889/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    glibc-2.26

    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