An incorrect permission check in Jenkins Matrix Authorization Strategy Plugin 2.6.5 and earlier allows attackers with Item/Read permission on nested items to access them, even if they lack Item/Read permission for parent folders.

The version of Jenkins Enterprise or Jenkins Operations Center running on the remote web server is 2.222.x prior to 2.222.43.0.3 rev2, 2.249.x prior to 2.249.30.0.3 rev2, or 2.x prior to 2.277.1.2 rev2. It is, therefore, affected by multiple vulnerabilities, including the following:

  - An incorrect permission check in Jenkins Matrix Authorization Strategy Plugin 2.6.5 and earlier allows     attackers with Item/Read permission on nested items to access them, even if they lack Item/Read permission     for parent folders. (CVE-2021-21623)

  - An incorrect permission check in Jenkins Role-based Authorization Strategy Plugin 3.1 and earlier allows     attackers with Item/Read permission on nested items to access them, even if they lack Item/Read permission     for parent folders. (CVE-2021-21624)

  - A cross-site request forgery (CSRF) vulnerability in Jenkins Libvirt Agents Plugin 1.9.0 and earlier     allows attackers to stop hypervisor domains. (CVE-2021-21627)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:2437 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution     designed for on-premise or private cloud deployments.

    This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.8.2. See the following     advisory for the container images for this release:

    https://access.redhat.com/errata/RHSA-2021:2438

    Security Fix(es):

    * gogo/protobuf: plugin/unmarshal/unmarshal.go lacks certain index validation (CVE-2021-3121)

    * golang: crypto/elliptic: incorrect operations on the P-224 curve (CVE-2021-3114)

    * openshift: Injected service-ca.crt incorrectly contains additional internal CAs (CVE-2021-3636)

    * python-eventlet: improper handling of highly compressed data and memory allocation with excessive size     allows DoS (CVE-2021-21419)

    * jenkins-2-plugins/matrix-auth: Incorrect permission checks in Matrix Authorization Strategy Plugin     (CVE-2021-21623)

    * jenkins-2-plugins/credentials: Reflected XSS vulnerability in Credentials Plugin (CVE-2021-21648)

    * kubernetes: Validating Admission Webhook does not observe some previous fields (CVE-2021-25735)

    * jenkins: lack of type validation in agent related REST API (CVE-2021-21639)

    * jenkins: view name validation bypass (CVE-2021-21640)

    * kubernetes: Holes in EndpointSlice Validation Enable Host Network Hijack (CVE-2021-25737)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    All OpenShift Container Platform 4.8 users are advised to upgrade to these updated packages and images     when they are available in the appropriate release channel. To check for available updates, use the     OpenShift Console or the CLI oc command. Instructions for upgrading a cluster are available at     https://docs.openshift.com/container-platform/4.8/updating/updating-cluster-between-     minor.html#understanding-upgrade-channels_updating-cluster-between-minor

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
155633	Jenkins Enterprise and Operations Center < 2.222.43.0.3 rev2 / 2.249.30.0.3 rev2 / 2.277.1.2 rev2 Multiple Vulnerabilities (CloudBees Security Advisory 2021-03-18)	Nessus	CGI abuses	high
152103	RHEL 7 / 8 : OpenShift Container Platform 4.8.2 (RHSA-2021:2437)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2021-21623

medium

Tenable Plugins

high

high