UBUNTU-CVE-2016-1902

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    UBUNTU-CVE-2016-1902

    Published: 1 Jun 2016Last Modified: 16 Jul 2025
    Upstream:
    CVE-2016-1902

    Summary:

    Details: The nextBytes function in the SecureRandom class in Symfony before 2.3.37, 2.6.x before 2.6.13, and 2.7.x before 2.7.9 does not properly generate random numbers when used with PHP 5.x without the paragonie/random_compat library and the openssl_random_pseudo_bytes function fails, which makes it easier for attackers to defeat cryptographic protection mechanisms via unspecified vectors.

    References: https://ubuntu.com/security/CVE-2016-1902, http://symfony.com/blog/cve-2016-1902-securerandom-s-fallback-not-secure-when-openssl-fails, https://github.com/symfony/symfony/pull/17359, https://www.cve.org/CVERecord?id=CVE-2016-1902

    Affected packages

    Package

    Name: symfony

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.7.9+dfsg-1

    Affected versions

    2.7.1+dfsg-1
    2.7.5+dfsg-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