UBUNTU-CVE-2017-18269

    Dashboard / Vulnerabilities / UBUNTU-CVE-2017-18269

    UBUNTU-CVE-2017-18269

    Published: 18 May 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2017-18269
    Aliases:
    USN-4416-1

    Summary:

    Details: An SSE2-optimized memmove implementation for i386 in sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S in the GNU C Library (aka glibc or libc6) 2.21 through 2.27 does not correctly perform the overlapping memory check if the source memory range spans the middle of the address space, resulting in corrupt data being produced by the copy operation. This may disclose information to context-dependent attackers, or result in a denial of service, or, possibly, code execution.

    References: https://ubuntu.com/security/CVE-2017-18269, https://github.com/fingolfin/memmove-bug, https://ubuntu.com/security/notices/USN-4416-1, https://www.cve.org/CVERecord?id=CVE-2017-18269

    Affected packages

    Package

    Name: glibc

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.23-0ubuntu11.2

    Affected versions

    2.21-0ubuntu4

    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