UBUNTU-CVE-2021-23437

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    UBUNTU-CVE-2021-23437

    Published: 3 Sept 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-23437

    Summary:

    Details: The package pillow 5.2.0 and before 8.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) via the getrgb function.

    References: https://ubuntu.com/security/CVE-2021-23437, https://snyk.io/vuln/SNYK-PYTHON-PILLOW-1319443, https://pillow.readthedocs.io/en/stable/releasenotes/8.3.2.html, https://ubuntu.com/security/notices/USN-5227-1, https://ubuntu.com/security/notices/USN-5227-2, https://www.cve.org/CVERecord?id=CVE-2021-23437

    Affected packages

    Package

    Name: pillow

    Purl: pkg:deb/ubuntu/[email protected]+esm3?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.3.0-1ubuntu3.4+esm3

    Affected versions

    2.2.1-1ubuntu2
    2.2.1-2ubuntu1
    2.2.1-3ubuntu2
    2.2.1-3ubuntu3
    2.2.1-3ubuntu4
    2.2.1-3ubuntu6

    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-2021-23437 | CVE-DB