UBUNTU-CVE-2021-3393

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    UBUNTU-CVE-2021-3393

    Published: 12 Feb 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-3393
    Aliases:
    USN-4735-1

    Summary:

    Details: An information leak was discovered in postgresql in versions before 13.2, before 12.6 and before 11.11. A user having UPDATE permission but not SELECT permission to a particular column could craft queries which, under some circumstances, might disclose values from that column in error messages. An attacker could use this flaw to obtain information stored in a column they are allowed to write but not read.

    References: https://ubuntu.com/security/CVE-2021-3393, https://www.postgresql.org/about/news/postgresql-132-126-1111-1016-9621-and-9525-released-2165/, https://ubuntu.com/security/notices/USN-4735-1, https://www.cve.org/CVERecord?id=CVE-2021-3393

    Affected packages

    Package

    Name: postgresql-12

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -12.6-0ubuntu0.20.04.1

    Affected versions

    12.0-1

    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-2021-3393 | CVE-DB