UBUNTU-CVE-2020-35679

    Dashboard / Vulnerabilities / UBUNTU-CVE-2020-35679

    UBUNTU-CVE-2020-35679

    Published: 24 Dec 2020Last Modified: 17 Oct 2026
    Upstream:
    CVE-2020-35679

    Summary:

    Details: smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger a "very significant" memory leak via messages to an instance that performs many regex lookups.

    References: https://ubuntu.com/security/CVE-2020-35679, https://github.com/openbsd/src/commit/79a034b4aed29e965f45a13409268290c9910043, https://www.mail-archive.com/[email protected]/msg05188.html, https://poolp.org/posts/2020-12-24/december-2020-opensmtpd-6.8.0p1-released-fixed-several-bugs-proposed-several-diffs-book-is-on-github/, https://www.cve.org/CVERecord?id=CVE-2020-35679

    Affected packages

    Package

    Name: opensmtpd

    Purl: pkg:deb/ubuntu/opensmtpd?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    5.3.3p1-4

    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-2020-35679 | CVE-DB