UBUNTU-CVE-2021-27923

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    UBUNTU-CVE-2021-27923

    Published: 3 Mar 2021Last Modified: 2 Apr 2026
    Upstream:
    CVE-2021-27923
    Aliases:
    USN-4763-1

    Summary:

    Details: Pillow before 8.1.2 allows attackers to cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for an ICO container, and thus an attempted memory allocation can be very large.

    References: https://ubuntu.com/security/CVE-2021-27923, https://pillow.readthedocs.io/en/stable/releasenotes/8.1.1.html, https://ubuntu.com/security/notices/USN-4763-1, https://www.cve.org/CVERecord?id=CVE-2021-27923

    Affected packages

    Package

    Name: pillow

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.1.2-0ubuntu1.6

    Affected versions

    2.9.0-1

    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-2021-27923 | CVE-DB