UBUNTU-CVE-2023-4255

    Dashboard / Vulnerabilities / UBUNTU-CVE-2023-4255

    UBUNTU-CVE-2023-4255

    Published: 2 Jan 2024Last Modified: 4 Feb 2026
    Upstream:
    CVE-2023-4255
    Aliases:
    USN-6580-1

    Summary:

    Details: An out-of-bounds write issue has been discovered in the backspace handling of the checkType() function in etc.c within the W3M application. This vulnerability is triggered by supplying a specially crafted HTML file to the w3m binary. Exploitation of this flaw could lead to application crashes, resulting in a denial of service condition.

    References: https://ubuntu.com/security/CVE-2023-4255, https://github.com/tats/w3m/pull/273, https://ubuntu.com/security/notices/USN-6580-1, https://www.cve.org/CVERecord?id=CVE-2023-4255

    Affected packages

    Package

    Name: w3m

    Purl: pkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.5.3-15ubuntu0.2+esm2

    Affected versions

    0.5.3-11
    0.5.3-12
    0.5.3-13
    0.5.3-15
    0.5.3-15ubuntu0.1
    0.5.3-15ubuntu0.2
    0.5.3-15ubuntu0.2+esm1

    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
    UBUNTU-CVE-2023-4255 | CVE-DB