UBUNTU-CVE-2021-30130

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    UBUNTU-CVE-2021-30130

    Published: 6 Apr 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-30130
    Aliases:
    USN-7404-1

    Summary:

    Details: phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.

    References: https://ubuntu.com/security/CVE-2021-30130, https://github.com/phpseclib/phpseclib/pull/1635, https://github.com/phpseclib/phpseclib/releases/tag/2.0.31, https://github.com/phpseclib/phpseclib/releases/tag/3.0.7, https://www.cve.org/CVERecord?id=CVE-2021-30130, https://ubuntu.com/security/notices/USN-7404-1

    Affected packages

    Package

    Name: php-phpseclib

    Purl: pkg:deb/ubuntu/[email protected]~esm2?arch=source&distro=esm-apps/focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.0.23-2ubuntu0.1~esm2

    Affected versions

    2.0.21-2
    2.0.23-2

    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-2021-30130 | CVE-DB