GHSA-fj6f-6933-839j

    Dashboard / Vulnerabilities / GHSA-fj6f-6933-839j

    GHSA-fj6f-6933-839j

    Published: 24 May 2022Last Modified: 16 Feb 2024

    Summary: Non-constant time HMAC comparison

    Details: Jenkins 2.218 and earlier, LTS 2.204.1 and earlier does not use a constant-time comparison when checking whether two HMACs are equal. This could potentially allow attackers to use statistical methods to obtain a valid HMAC for an attacker-controlled input value. Jenkins 2.219, LTS 2.204.2 now uses a constant-time comparison when validating HMACs.

    References: https://nvd.nist.gov/vuln/detail/CVE-2020-2102, https://github.com/jenkinsci/jenkins/commit/6f35dbb939ebe947bdb1979010b208480f1d0e31, https://access.redhat.com/errata/RHBA-2020:0402, https://access.redhat.com/errata/RHBA-2020:0675, https://access.redhat.com/errata/RHSA-2020:0681, https://access.redhat.com/errata/RHSA-2020:0683, https://github.com/jenkinsci/jenkins, https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1660, http://www.openwall.com/lists/oss-security/2020/01/29/1

    Affected packages

    Package

    Name: org.jenkins-ci.main:jenkins-core

    Purl: pkg:maven/org.jenkins-ci.main/jenkins-core

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.204.2

    Affected versions

    1.396

    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
    GHSA-fj6f-6933-839j | CVE-DB