UBUNTU-CVE-2021-1405

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    UBUNTU-CVE-2021-1405

    Published: 8 Apr 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-1405

    Summary:

    Details: A vulnerability in the email parsing module in Clam AntiVirus (ClamAV) Software version 0.103.1 and all prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper variable initialization that may result in an NULL pointer read. An attacker could exploit this vulnerability by sending a crafted email to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process crash, resulting in a denial of service condition.

    References: https://ubuntu.com/security/CVE-2021-1405, https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html, https://ubuntu.com/security/notices/USN-4918-1, https://ubuntu.com/security/notices/USN-4918-2, https://ubuntu.com/security/notices/USN-4918-3, https://www.cve.org/CVERecord?id=CVE-2021-1405

    Affected packages

    Package

    Name: clamav

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-0ubuntu0.14.04.1+esm1?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.103.2+dfsg-0ubuntu0.14.04.1+esm1

    Affected versions

    0.97.8+dfsg-1ubuntu4
    0.97.8+dfsg-1ubuntu5

    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-2021-1405 | CVE-DB