A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions
    5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and
    privileged attacker to supply malicious YAML. (CVE-2021-4178)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:3299 advisory.

    Jenkins is a continuous integration server that monitors executions of repeated jobs, such as building a     software project or jobs run by cron.

    Security Fix(es):

    * apache-commons-text: variable interpolation RCE (CVE-2022-42889)

    * google-oauth-client: missing PKCE support in accordance with the RFC for OAuth 2.0 for Native Apps can     lead to improper authorization (CVE-2020-7692)

    * jenkins-2-plugins/script-security: Sandbox bypass vulnerability in Script Security Plugin     (CVE-2023-24422)

    * kubernetes-client: Insecure deserialization in unmarshalYaml method (CVE-2021-4178)

    * jackson-databind: Possible DoS if using JDK serialization to serialize JsonNode (CVE-2021-46877)

    * springframework: Authorization Bypass in RegexRequestMatcher (CVE-2022-22978)

    * xstream: Xstream to serialise XML data was vulnerable to Denial of Service attacks (CVE-2022-40151)

    * woodstox-core: woodstox to serialise XML data was vulnerable to Denial of Service attacks     (CVE-2022-40152)

    * Apache Commons FileUpload: FileUpload DoS with excessive parts (CVE-2023-24998)

    * jenkins-2-plugins/JUnit: Stored XSS vulnerability in JUnit Plugin (CVE-2023-25761)

    * jenkins-2-plugins/pipeline-build-step: Stored XSS vulnerability in Pipeline: Build Step Plugin     (CVE-2023-25762)

    * Jenkins: Denial of Service attack (CVE-2023-27900)

    * Jenkins: Denial of Service attack (CVE-2023-27901)

    * Jenkins: Workspace temporary directories accessible through directory browser (CVE-2023-27902)

    * Jenkins: Information disclosure through error stack traces related to agents (CVE-2023-27904)

    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.

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.

The version of Jenkins Enterprise or Jenkins Operations Center running on the remote web server is 2.303.x prior to 2.303.30.0.4, or 2.x prior to 2.319.2.9. It is, therefore, affected by a remote code execution vulnerability in the Kubernetes Client API. An authenticated, local attacker can exploit this, by entering YAML that would be processed by the Kubernetes Client API.

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

ID	Name	Product	Family	Severity
413136	SCA: security update for io.fabric8:kubernetes-client (GHSA-98g7-rxmf-rrxm)	Tenable Cloud Security	SCA Checks	medium
413136	SCA: security update for io.fabric8:kubernetes-client (GHSA-98g7-rxmf-rrxm)	Tenable Self-Hosted Container Security	SCA Checks	medium
194250	RHEL 8 : jenkins and jenkins-2-plugins (RHSA-2023:3299)	Nessus	Red Hat Local Security Checks	critical
157338	Jenkins Enterprise and Operations Center < 2.303.30.0.4 / 2.319.2.9 RCE (CloudBees Security Advisory 2022-01-28)	Nessus	CGI abuses	medium

Detections

Analytics

CVE-2021-4178

medium

Tenable Plugins

medium

medium

critical

medium