For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, it is possible for requests to the ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For example a request to `/concat?/%2557EB-INF/web.xml` can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application.

The remote Red Hat Enterprise Linux CoreOS 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3758 advisory.

  - coreos-installer: restrict access permissions on /boot/ignition{,/config.ign} (CVE-2021-3917)

  - jetty: requests to the ConcatServlet and WelcomeFilter are able to access protected resources within the     WEB-INF directory (CVE-2021-28169)

  - golang: archive/zip: malformed archive may cause panic or memory exhaustion (CVE-2021-33196)

  - jetty: SessionListener can prevent a session from being invalidated breaking logout (CVE-2021-34428)

  - openvswitch: use-after-free in decode_NXAST_RAW_ENCAP during the decoding of a RAW_ENCAP action     (CVE-2021-36980)

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, it is possible for requests to the     ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For     example a request to `/concat?/%2557EB-INF/web.xml` can retrieve the web.xml file. This can reveal     sensitive information regarding the implementation of a web application. (CVE-2021-28169)

Note that Nessus relies on the presence of the package as reported by the vendor.

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

  - For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, it is possible for requests to the
    ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For
    example a request to `/concat?/%2557EB-INF/web.xml` can retrieve the web.xml file. This can reveal
    sensitive information regarding the implementation of a web application. (CVE-2021-28169)

The version of IBM Cognos Analytics installed on the remote host is prior to 11.2.4 FP4 or 12.0.4. It is, therefore, affected by multiple vulnerabilities as referenced in the 7173592 advisory.

  - An arbitrary file upload vulnerability in formidable v3.1.4 allows attackers to execute arbitrary code via     a crafted filename. NOTE: some third parties dispute this issue because the product has common use cases     in which uploading arbitrary files is the desired behavior. Also, there are configuration options in all     versions that can change the default behavior of how files are handled. Strapi does not consider this to     be a valid vulnerability. (CVE-2022-29622)

  - Node.js IP package could allow a remote attacker to execute arbitrary code on the system, caused by a     server-side request forgery flaw in the ip.isPublic() function. By sending a specially crafted request     using a hexadecimal representation of a private IP address, an attacker could exploit this vulnerability     to execute arbitrary code on the system and obtain sensitive information. (CVE-2023-42282)   
  - Multiple vendors are vulnerable to a denial of service, caused by a flaw in handling multiplexed streams     in the HTTP/2 protocol. By sending numerous HTTP/2 requests and RST_STREAM frames over multiple streams, a     remote attacker could exploit this vulnerability to cause a denial of service due to server resource     consumption. (CVE-2023-44487)

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2-2024-2408 advisory.

    For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, it is possible for requests to the     ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For     example a request to `/concat?/%2557EB-INF/web.xml` can retrieve the web.xml file. This can reveal     sensitive information regarding the implementation of a web application. (CVE-2021-28169)

Tenable has extracted the preceding description block directly from the tested product 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 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3758 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 4.9.0. See the following     advisory for the container images for this release:

    https://access.redhat.com/errata/RHSA-2021:3759

    Security Fix(es):

    * jetty: requests to the ConcatServlet and WelcomeFilter are able to access protected resources within the     WEB-INF directory (CVE-2021-28169)

    * golang: archive/zip: malformed archive may cause panic or memory exhaustion (CVE-2021-33196)

    * openvswitch: use-after-free in decode_NXAST_RAW_ENCAP during the decoding of a RAW_ENCAP action     (CVE-2021-36980)

    * jetty: SessionListener can prevent a session from being invalidated breaking logout (CVE-2021-34428)

    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 4.9 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/4.9/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.

According to its self-reported version number, the instance of Jetty hosted on the remote web server is prior to 9.4.41, 10.0.x prior to 10.0.3 or 11.0.x prior to 11.0.3. It is, therefore, affected by multiple vulnerabilities:

- An issue with failure to invalidate sessions after an exception in the SessionListener#sessionDestroyed() method. (CVE-2021-34428)

- A issue with permitting access to protected resources within the WEB-INF directory when accessed with doubly encoded paths. (CVE-2021-28169)

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

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:2005-1 advisory.

  - In Eclipse Jetty 9.4.32 to 9.4.38, 10.0.0.beta2 to 10.0.1, and 11.0.0.beta2 to 11.0.1, if a user uses a     webapps directory that is a symlink, the contents of the webapps directory is deployed as a static webapp,     inadvertently serving the webapps themselves and anything else that might be in that directory.
    (CVE-2021-28163)

  - In Eclipse Jetty 9.4.37.v20210219 to 9.4.38.v20210224, the default compliance mode allows requests with     URIs that contain %2e or %2e%2e segments to access protected resources within the WEB-INF directory. For     example a request to /context/%2e/WEB-INF/web.xml can retrieve the web.xml file. This can reveal sensitive     information regarding the implementation of a web application. (CVE-2021-28164)

  - In Eclipse Jetty 7.2.2 to 9.4.38, 10.0.0.alpha0 to 10.0.1, and 11.0.0.alpha0 to 11.0.1, CPU usage can     reach 100% upon receiving a large invalid TLS frame. (CVE-2021-28165)

  - For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, it is possible for requests to the     ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For     example a request to `/concat?/%2557EB-INF/web.xml` can retrieve the web.xml file. This can reveal     sensitive information regarding the implementation of a web application. (CVE-2021-28169)

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

Steven Seeley discovered that in jetty, a Java servlet engine and webserver, requests to the ConcatServlet and WelcomeFilter are able to access protected resources within the WEB-INF directory. An attacker may access sensitive information regarding the implementation of a web application.

For Debian 9 stretch, this problem has been fixed in version 9.2.30-0+deb9u2.

We recommend that you upgrade your jetty9 packages.

For the detailed security status of jetty9 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/jetty9

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2005-1 advisory.

    Update to version 9.4.42.v20210604

    - Fix: bsc#1187117, CVE-2021-28169 - possible for requests to the ConcatServlet with a doubly encoded path     to access protected resources within the WEB-INF directory
    - Fix: bsc#1184367, CVE-2021-28165 - jetty server high CPU when client send data length > 17408
    - Fix: bsc#1184368, CVE-2021-28164 - Normalize ambiguous URIs
    - Fix: bsc#1184366, CVE-2021-28163 - Exclude webapps directory from deployment scan

Tenable has extracted the preceding description block directly from the SUSE 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	Type	Severity
312566	RHCOS 4 : OpenShift Container Platform 4.9.0 (RHSA-2021:3758)	Nessus	Red Hat Local Security Checks	Local	medium
251000	Linux Distros Unpatched Vulnerability : CVE-2021-28169	Nessus	Misc.	Local	medium
415341	SCA: security update for org.eclipse.jetty:jetty-servlets (GHSA-gwcr-j4wh-j3cq)	Tenable Cloud Security	SCA Checks	Local	medium
415341	SCA: security update for org.eclipse.jetty:jetty-servlets (GHSA-gwcr-j4wh-j3cq)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
213274	IBM Cognos Analytics 11.2.x < 11.2.4 FP4 / 12.0.x < 12.0.4 Multiple Vulnerabilities (7173592)	Nessus	CGI abuses	Remote	critical
187843	Amazon Linux 2 : jetty (ALAS-2024-2408)	Nessus	Amazon Linux Local Security Checks	Local	medium
165134	RHEL 7 / 8 : OpenShift Container Platform 4.9.0 (RHSA-2021:3758)	Nessus	Red Hat Local Security Checks	Local	medium
112992	Jetty 11.0.x < 11.0.3 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	medium
112991	Jetty 10.0.x < 10.0.3 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	medium
112990	Jetty < 9.4.41 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	medium
151741	openSUSE 15 Security Update : jetty-minimal (openSUSE-SU-2021:2005-1)	Nessus	SuSE Local Security Checks	Local	medium
150904	Debian DLA-2688-1 : jetty9 security update	Nessus	Debian Local Security Checks	Local	medium
150895	SUSE SLED15: jetty-http / jetty-io / jetty-security / jetty-server / etc (SUSE-SU-2021:2005-1)	Nessus	SuSE Local Security Checks	Local	medium

Detections

Analytics

CVE-2021-28169

medium

Tenable Plugins

medium

medium

medium

medium

critical

medium

medium

medium

medium

medium

medium

medium

medium