Jenkins 2.275 and LTS 2.263.2 allows reading arbitrary files using the file browser for workspaces and archived artifacts due to a time-of-check to time-of-use (TOCTOU) race condition.

redhat RHSA-2021:0429: RHSA-2021:0429: OpenShift Container Platform 4.5.33 packages and security update (Important)

redhat RHSA-2021:0423: RHSA-2021:0423: OpenShift Container Platform 4.6.17 security and packages update (Important)

The version of Jenkins Enterprise or Jenkins Operations Center running on the remote web server is 2.222.x prior to 2.222.43.0.2, 2.249.x prior to 2.249.30.0.2, or 2.x prior to 2.263.2.3. It is, therefore, affected by an arbitrary file read vulnerability due to a time-of-check to time-of-use (TOCTOU) race condition. An authenticated, remote attacker can exploit this, via the workspace browser, to access files outside workspaces.

Note that Nessus has not tested for this issue 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-2021:0429 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 4.5.33. See the following advisory for the container images for     this release:

    https://access.redhat.com/errata/RHSA-2021:0428

    Security Fix(es):

    * jenkins:  XSS vulnerability in notification bar (CVE-2021-21603)

    * jenkins:  Improper handling of REST API XML deserialization errors (CVE-2021-21604)

    * jenkins:  Path traversal vulnerability in agent names (CVE-2021-21605)

    * jenkins: Stored XSS vulnerability in button labels (CVE-2021-21608)

    * jenkins:  Reflected XSS vulnerability in markup formatter preview (CVE-2021-21610)

    * jenkins:  Stored XSS vulnerability on new item page (CVE-2021-21611)

    * ant: insecure temporary file vulnerability (CVE-2020-1945)

    * ant: insecure temporary file (CVE-2020-11979)

    * jenkins: Arbitrary file read vulnerability in workspace browsers (CVE-2021-21602)

    * jenkins:  Arbitrary file existence check in file fingerprints (CVE-2021-21606)

    * jenkins:  Excessive memory allocation in graph URLs leads to denial of service (CVE-2021-21607)

    * jenkins: Filesystem traversal by privileged users (CVE-2021-21615)

    * jenkins:  Missing permission check for paths with specific prefix (CVE-2021-21609)

    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 remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0423 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 4.6.17. See the following advisory for the container images for     this release:

    https://access.redhat.com/errata/RHBA-2021:0424

    Security Fix(es):

    * jenkins:  XSS vulnerability in notification bar (CVE-2021-21603)

    * jenkins:  Improper handling of REST API XML deserialization errors (CVE-2021-21604)

    * jenkins:  Path traversal vulnerability in agent names (CVE-2021-21605)

    * jenkins: Stored XSS vulnerability in button labels (CVE-2021-21608)

    * jenkins:  Reflected XSS vulnerability in markup formatter preview (CVE-2021-21610)

    * jenkins:  Stored XSS vulnerability on new item page (CVE-2021-21611)

    * ant: insecure temporary file vulnerability (CVE-2020-1945)

    * ant: insecure temporary file (CVE-2020-11979)

    * jenkins: Arbitrary file read vulnerability in workspace browsers (CVE-2021-21602)

    * jenkins:  Arbitrary file existence check in file fingerprints (CVE-2021-21606)

    * jenkins:  Excessive memory allocation in graph URLs leads to denial of service (CVE-2021-21607)

    * jenkins: Filesystem traversal by privileged users (CVE-2021-21615)

    * jenkins:  Missing permission check for paths with specific prefix (CVE-2021-21609)

    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 running on the remote web server is prior to 2.276 weekly or 2.263.3 LTS. It is, therefore, affected by a time-of-check to time-of-use (TOCTOU) race condition that allows reading arbitrary files using the file browser for workspaces and archived artifacts.

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
155841	Jenkins Enterprise and Operations Center < 2.222.43.0.2 / 2.249.30.0.2 / 2.263.2.3 Arbitrary File Read (CloudBees Security Advisory 2021-01-26)	Nessus	CGI abuses	medium
147015	RHEL 7 / 8 : OpenShift Container Platform 4.5.33 (RHSA-2021:0429)	Nessus	Red Hat Local Security Checks	high
146566	RHEL 8 : OpenShift Container Platform 4.6.17 (RHSA-2021:0423)	Nessus	Red Hat Local Security Checks	high
145533	Jenkins < 2.263.3 LTS / 2.276 TOCTOU	Nessus	CGI abuses	medium

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CVE-2021-21615

medium

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medium