UBUNTU-CVE-2021-3935

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    UBUNTU-CVE-2021-3935

    Published: 22 Nov 2021Last Modified: 24 Oct 2025
    Upstream:
    CVE-2021-3935

    Summary:

    Details: When PgBouncer is configured to use "cert" authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of TLS certificate verification and encryption. This flaw affects PgBouncer versions prior to 1.16.1.

    References: https://ubuntu.com/security/CVE-2021-3935, https://www.pgbouncer.org/2021/11/pgbouncer-1-16-1, https://github.com/pgbouncer/pgbouncer/releases/tag/pgbouncer_1_16_1, https://github.com/pgbouncer/pgbouncer/commit/e4453c9151a2f5af0a9cb049b302a3f9f9654453, https://bugzilla.redhat.com/show_bug.cgi?id=2021251, http://www.pgbouncer.org/changelog.html#pgbouncer-116x, https://www.cve.org/CVERecord?id=CVE-2021-3935

    Affected packages

    Package

    Name: pgbouncer

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.5.5-1

    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-2021-3935 | CVE-DB