UBUNTU-CVE-2018-20651

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    UBUNTU-CVE-2018-20651

    Published: 1 Jan 2019Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-20651
    Aliases:
    USN-4336-1

    Summary:

    Details: A NULL pointer dereference was discovered in elf_link_add_object_symbols in elflink.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31.1. This occurs for a crafted ET_DYN with no program headers. A specially crafted ELF file allows remote attackers to cause a denial of service, as demonstrated by ld.

    References: https://ubuntu.com/security/CVE-2018-20651, https://ubuntu.com/security/notices/USN-4336-1, https://www.cve.org/CVERecord?id=CVE-2018-20651

    Affected packages

    Package

    Name: binutils

    Purl: pkg:deb/ubuntu/[email protected]~18.04.3?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.30-21ubuntu1~18.04.3

    Affected versions

    2.29.1-4ubuntu1
    2.29.1-6ubuntu1
    2.29.1-7ubuntu1
    2.29.1-8ubuntu1
    2.29.1-10ubuntu1
    2.29.1-12ubuntu1

    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