An authentication bypass vulnerability was discovered in kube-apiserver. This issue could allow a remote, authenticated attacker who has been given permissions "update, patch" the "pods/ephemeralcontainers" subresource beyond what the default is. They would then need to create a new pod or patch one that they already have access to. This might allow evasion of SCC admission restrictions, thereby gaining control of a privileged pod.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2023:4312 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 4.11.46. See the     following advisory for the container images for this release:

    https://access.redhat.com/errata/RHSA-2023:4310

    Security Fix(es):

    * kube-apiserver: PrivEsc (CVE-2023-1260)

    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 4.11 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 CLI (oc) or web console. Instructions for upgrading a cluster are available at     https://docs.openshift.com/container-platform/4.11/updating/updating-cluster-cli.html

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

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 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:4093 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 4.13.5. See the following     advisory for the container images for this release:

    https://access.redhat.com/errata/RHSA-2023:4091

    Security Fix(es):

    * openshift: OCP & FIPS mode (CVE-2023-3089)

    * kube-apiserver: PrivEsc (CVE-2023-1260)

    * golang: net/http, net/textproto: denial of service from excessive memory allocation (CVE-2023-24534)

    * golang: net/http, net/textproto, mime/multipart: denial of service from excessive resource consumption     (CVE-2023-24536)

    * golang: go/parser: Infinite loop in parsing (CVE-2023-24537)

    * golang: html/template: backticks not treated as string delimiters (CVE-2023-24538)

    * golang: html/template: improper sanitization of CSS values (CVE-2023-24539)

    * runc: volume mount race condition (regression of CVE-2019-19921) (CVE-2023-27561)

    * golang: html/template: improper handling of empty HTML attributes (CVE-2023-29400)

    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 4.13 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 CLI (oc) or web console. Instructions for upgrading a cluster are available at     https://docs.openshift.com/container-platform/4.13/updating/updating-cluster-cli.html

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 / 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2023:3976 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 4.12.24. See the     following advisory for the container images for this release:

    https://access.redhat.com/errata/RHBA-2023:3977

    Security Fix(es):

    * kube-apiserver: PrivEsc (CVE-2023-1260)

    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 4.12 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 CLI (oc) or web console. Instructions for upgrading a cluster are available at     https://docs.openshift.com/container-platform/4.12/updating/updating-cluster-cli.html

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

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 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:5008 advisory.

    Red Hat build of MicroShift is Red Hat's light-weight Kubernetes orchestration solution designed for edge     device deployments and is built from the edge capabilities of Red Hat OpenShift. MicroShift is an     application that is deployed on top of Red Hat Enterprise Linux devices at the edge, providing an     efficient way to operate single-node clusters in these low-resource environments.

    This advisory contains the RPM packages for Red Hat build of MicroShift 4.14.0. Read the following     advisory for the container images for this release:

    https://access.redhat.com/errata/RHSA-2023:5006

    All of the bug fixes may not be documented in this advisory. Read the following release notes     documentation for details about these changes:

    https://access.redhat.com/documentation/en-us/red_hat_build_of_microshift/4.14/html/release_notes/index

    Security Fix(es):

    * kube-apiserver: PrivEsc (CVE-2023-1260)

    * kube-apiserver: Bypassing policies imposed by the ImagePolicyWebhook  admission plugin (CVE-2023-2727)

    * kube-apiserver: Bypassing enforce mountable secrets policy imposed by the  ServiceAccount admission     plugin (CVE-2023-2728)

    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 7 / 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2023:4898 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 4.10.67. See the     following advisory for the container images for this release:

    https://access.redhat.com/errata/RHBA-2023:4896

    Security Fix(es):

    * kube-apiserver: PrivEsc (CVE-2023-1260)

    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 4.10 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 CLI (oc) or web console. Instructions for upgrading a cluster are available at     https://docs.openshift.com/container-platform/4.10/updating/updating-cluster-cli.html

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

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

The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2023:4898 advisory.

  - An authentication bypass vulnerability was discovered in kube-apiserver. This issue could allow a remote,     authenticated attacker who has been given permissions update, patch the pods/ephemeralcontainers     subresource beyond what the default is. They would then need to create a new pod or patch one that they     already have access to. This might allow evasion of SCC admission restrictions, thereby gaining control of     a privileged pod. (CVE-2023-1260)

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

The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2023:4312 advisory.

  - An authentication bypass vulnerability was discovered in kube-apiserver. This issue could allow a remote,     authenticated attacker who has been given permissions update, patch the pods/ephemeralcontainers     subresource beyond what the default is. They would then need to create a new pod or patch one that they     already have access to. This might allow evasion of SCC admission restrictions, thereby gaining control of     a privileged pod. (CVE-2023-1260)

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

The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2023:3976 advisory.

  - An authentication bypass vulnerability was discovered in kube-apiserver. This issue could allow a remote,     authenticated attacker who has been given permissions update, patch the pods/ephemeralcontainers     subresource beyond what the default is. They would then need to create a new pod or patch one that they     already have access to. This might allow evasion of SCC admission restrictions, thereby gaining control of     a privileged pod. (CVE-2023-1260)

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

The remote Red Hat Enterprise Linux CoreOS 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:4093 advisory.

  - An authentication bypass vulnerability was discovered in kube-apiserver. This issue could allow a remote,     authenticated attacker who has been given permissions update, patch the pods/ephemeralcontainers     subresource beyond what the default is. They would then need to create a new pod or patch one that they     already have access to. This might allow evasion of SCC admission restrictions, thereby gaining control of     a privileged pod. (CVE-2023-1260)

  - HTTP and MIME header parsing can allocate large amounts of memory, even when parsing small inputs,     potentially leading to a denial of service. Certain unusual patterns of input data can cause the common     function used to parse HTTP and MIME headers to allocate substantially more memory than required to hold     the parsed headers. An attacker can exploit this behavior to cause an HTTP server to allocate large     amounts of memory from a small request, potentially leading to memory exhaustion and a denial of service.
    With fix, header parsing now correctly allocates only the memory required to hold parsed headers.
    (CVE-2023-24534)

  - Multipart form parsing can consume large amounts of CPU and memory when processing form inputs containing     very large numbers of parts. This stems from several causes: 1. mime/multipart.Reader.ReadForm limits the     total memory a parsed multipart form can consume. ReadForm can undercount the amount of memory consumed,     leading it to accept larger inputs than intended. 2. Limiting total memory does not account for increased     pressure on the garbage collector from large numbers of small allocations in forms with many parts. 3.
    ReadForm can allocate a large number of short-lived buffers, further increasing pressure on the garbage     collector. The combination of these factors can permit an attacker to cause an program that parses     multipart forms to consume large amounts of CPU and memory, potentially resulting in a denial of service.
    This affects programs that use mime/multipart.Reader.ReadForm, as well as form parsing in the net/http     package with the Request methods FormFile, FormValue, ParseMultipartForm, and PostFormValue. With fix,     ReadForm now does a better job of estimating the memory consumption of parsed forms, and performs many     fewer short-lived allocations. In addition, the fixed mime/multipart.Reader imposes the following limits     on the size of parsed forms: 1. Forms parsed with ReadForm may contain no more than 1000 parts. This limit     may be adjusted with the environment variable GODEBUG=multipartmaxparts=. 2. Form parts parsed with     NextPart and NextRawPart may contain no more than 10,000 header fields. In addition, forms parsed with     ReadForm may contain no more than 10,000 header fields across all parts. This limit may be adjusted with     the environment variable GODEBUG=multipartmaxheaders=. (CVE-2023-24536)

  - Calling any of the Parse functions on Go source code which contains //line directives with very large line     numbers can cause an infinite loop due to integer overflow. (CVE-2023-24537)

  - Templates do not properly consider backticks (`) as Javascript string delimiters, and do not escape them     as expected. Backticks are used, since ES6, for JS template literals. If a template contains a Go template     action within a Javascript template literal, the contents of the action can be used to terminate the     literal, injecting arbitrary Javascript code into the Go template. As ES6 template literals are rather     complex, and themselves can do string interpolation, the decision was made to simply disallow Go template     actions from being used inside of them (e.g. var a = {{.}}), since there is no obviously safe way to     allow this behavior. This takes the same approach as github.com/google/safehtml. With fix, Template.Parse     returns an Error when it encounters templates like this, with an ErrorCode of value 12. This ErrorCode is     currently unexported, but will be exported in the release of Go 1.21. Users who rely on the previous     behavior can re-enable it using the GODEBUG flag jstmpllitinterp=1, with the caveat that backticks will     now be escaped. This should be used with caution. (CVE-2023-24538)

  - Angle brackets (<>) are not considered dangerous characters when inserted into CSS contexts. Templates     containing multiple actions separated by a '/' character can result in unexpectedly closing the CSS     context and allowing for injection of unexpected HTML, if executed with untrusted input. (CVE-2023-24539)

  - runc through 1.1.4 has Incorrect Access Control leading to Escalation of Privileges, related to     libcontainer/rootfs_linux.go. To exploit this, an attacker must be able to spawn two containers with     custom volume-mount configurations, and be able to run custom images. NOTE: this issue exists because of a     CVE-2019-19921 regression. (CVE-2023-27561)

  - Templates containing actions in unquoted HTML attributes (e.g. attr={{.}}) executed with empty input can     result in output with unexpected results when parsed due to HTML normalization rules. This may allow     injection of arbitrary attributes into tags. (CVE-2023-29400)

  - A compliance problem was found in the Red Hat OpenShift Container Platform. Red Hat discovered that, when     FIPS mode was enabled, not all of the cryptographic modules in use were FIPS-validated. (CVE-2023-3089)

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
194317	RHEL 8 : OpenShift Container Platform 4.11.46 (RHSA-2023:4312)	Nessus	Red Hat Local Security Checks	high
194257	RHEL 8 / 9 : OpenShift Container Platform 4.13.5 (RHSA-2023:4093)	Nessus	Red Hat Local Security Checks	critical
194232	RHEL 8 / 9 : OpenShift Container Platform 4.12.24 (RHSA-2023:3976)	Nessus	Red Hat Local Security Checks	high
194227	RHEL 9 : Red Hat build of MicroShift 4.14.0 (RHSA-2023:5008)	Nessus	Red Hat Local Security Checks	high
193748	RHEL 7 / 8 : OpenShift Container Platform 4.10.67 (RHSA-2023:4898)	Nessus	Red Hat Local Security Checks	high
189456	RHCOS 4 : OpenShift Container Platform 4.10.67 (RHSA-2023:4898)	Nessus	Red Hat Local Security Checks	high
189439	RHCOS 4 : OpenShift Container Platform 4.11.46 (RHSA-2023:4312)	Nessus	Red Hat Local Security Checks	high
189420	RHCOS 4 : OpenShift Container Platform 4.12.24 (RHSA-2023:3976)	Nessus	Red Hat Local Security Checks	high
189410	RHCOS 4 : OpenShift Container Platform 4.13.5 (RHSA-2023:4093)	Nessus	Red Hat Local Security Checks	critical

Detections

Analytics

CVE-2023-1260

high

Tenable Plugins

high

critical

high

high

high

high

high

high

critical