In Eclipse Jetty versions 1.0 thru 9.4.32.v20200930, 10.0.0.alpha1 thru 10.0.0.beta2, and 11.0.0.alpha1 thru 11.0.0.beta2O, on Unix like systems, the system's temporary directory is shared between all users on that system. A collocated user can observe the process of creating a temporary sub directory in the shared temporary directory and race to complete the creation of the temporary subdirectory. If the attacker wins the race then they will have read and write permission to the subdirectory used to unpack web applications, including their WEB-INF/lib jar files and JSP files. If any code is ever executed out of this temporary directory, this can lead to a local privilege escalation vulnerability.

The version of F5 Networks BIG-IP installed on the remote host is prior to 15.1.9 / 16.1.4 / 17.1.1. It is, therefore, affected by a vulnerability as referenced in the K18484125 advisory.

  - In Eclipse Jetty versions 1.0 thru 9.4.32.v20200930, 10.0.0.alpha1 thru 10.0.0.beta2, and 11.0.0.alpha1     thru 11.0.0.beta2O, on Unix like systems, the system's temporary directory is shared between all users on     that system. A collocated user can observe the process of creating a temporary sub directory in the shared     temporary directory and race to complete the creation of the temporary subdirectory. If the attacker wins     the race then they will have read and write permission to the subdirectory used to unpack web     applications, including their WEB-INF/lib jar files and JSP files. If any code is ever executed out of     this temporary directory, this can lead to a local privilege escalation vulnerability. (CVE-2020-27216)

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

The version of Jetty installed on the remote host suffers from a potential race condition when creating temporary sub directories. If an co-located attacker wins the race, then they will have read/write privilege to the subdirectory used to unpack web applications, potentially leading to a local privilege escalation vulnerability. Note that the scanner has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-4949 advisory.

  - In Eclipse Jetty version 9.2.26 and older, 9.3.25 and older, and 9.4.15 and older, the server is     vulnerable to XSS conditions if a remote client USES a specially formatted URL against the DefaultServlet     or ResourceHandler that is configured for showing a Listing of directory contents. (CVE-2019-10241)

  - In Eclipse Jetty version 7.x, 8.x, 9.2.27 and older, 9.3.26 and older, and 9.4.16 and older, the server     running on any OS and Jetty version combination will reveal the configured fully qualified directory base     resource location on the output of the 404 error for not finding a Context that matches the requested     path. The default server behavior on jetty-distribution and jetty-home will include at the end of the     Handler tree a DefaultHandler, which is responsible for reporting this 404 error, it presents the various     configured contexts as HTML for users to click through to. This produced HTML includes output that     contains the configured fully qualified directory base resource location for each context.
    (CVE-2019-10247)

  - In Eclipse Jetty versions 1.0 thru 9.4.32.v20200930, 10.0.0.alpha1 thru 10.0.0.beta2, and 11.0.0.alpha1     thru 11.0.0.beta2O, on Unix like systems, the system's temporary directory is shared between all users on     that system. A collocated user can observe the process of creating a temporary sub directory in the shared     temporary directory and race to complete the creation of the temporary subdirectory. If the attacker wins     the race then they will have read and write permission to the subdirectory used to unpack web     applications, including their WEB-INF/lib jar files and JSP files. If any code is ever executed out of     this temporary directory, this can lead to a local privilege escalation vulnerability. (CVE-2020-27216)

  - In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a     request containing multiple Accept headers with a large number of quality (i.e. q) parameters, the     server may enter a denial of service (DoS) state due to high CPU usage processing those quality values,     resulting in minutes of CPU time exhausted processing those quality values. (CVE-2020-27223)

  - The td-agent-builder plugin before 2020-12-18 for Fluentd allows attackers to gain privileges because the     bin directory is writable by a user account, but a file in bin is executed as NT AUTHORITY\SYSTEM.
    (CVE-2020-28169)

  - For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, if an exception is thrown from the     SessionListener#sessionDestroyed() method, then the session ID is not invalidated in the session ID     manager. On deployments with clustered sessions and multiple contexts this can result in a session not     being invalidated. This can result in an application used on a shared computer being left logged in.
    (CVE-2021-34428)

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 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:2431 advisory.

  - jetty: local temporary directory hijacking vulnerability (CVE-2020-27216)

  - jetty: buffer not correctly recycled in Gzip Request inflation (CVE-2020-27218)

  - jetty: request containing multiple Accept headers with a large number of quality parameters may lead to     DoS (CVE-2020-27223)

  - jenkins-2-plugins/config-file-provider: Does not configure its XML parser to prevent XML external entity     (XXE) attacks. (CVE-2021-21642)

  - jenkins-2-plugins/config-file-provider: Does not correctly perform permission checks in several HTTP     endpoints. (CVE-2021-21643)

  - jenkins-2-plugins/config-file-provider: does not require POST requests for an HTTP endpoint, resulting in     a cross-site request forgery (CSRF) vulnerability. (CVE-2021-21644)

  - jenkins-2-plugins/config-file-provider: Does not perform permission checks in several HTTP endpoints.
    (CVE-2021-21645)

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 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:2517 advisory.

  - jetty: local temporary directory hijacking vulnerability (CVE-2020-27216)

  - jetty: buffer not correctly recycled in Gzip Request inflation (CVE-2020-27218)

  - jetty: request containing multiple Accept headers with a large number of quality parameters may lead to     DoS (CVE-2020-27223)

  - jenkins-2-plugins/config-file-provider: Does not configure its XML parser to prevent XML external entity     (XXE) attacks. (CVE-2021-21642)

  - jenkins-2-plugins/config-file-provider: Does not correctly perform permission checks in several HTTP     endpoints. (CVE-2021-21643)

  - jenkins-2-plugins/config-file-provider: does not require POST requests for an HTTP endpoint, resulting in     a cross-site request forgery (CSRF) vulnerability. (CVE-2021-21644)

  - jenkins-2-plugins/config-file-provider: Does not perform permission checks in several HTTP endpoints.
    (CVE-2021-21645)

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-2021:2499 advisory.

  - jetty: local temporary directory hijacking vulnerability (CVE-2020-27216)

  - jetty: buffer not correctly recycled in Gzip Request inflation (CVE-2020-27218)

  - jetty: request containing multiple Accept headers with a large number of quality parameters may lead to     DoS (CVE-2020-27223)

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

Several vulnerabilities were discovered in jetty, a Java servlet engine and webserver. An attacker may reveal cryptographic credentials such as passwords to a local user, disclose installation paths, hijack user sessions or tamper with collocated webapps.

CVE-2017-9735

Jetty is prone to a timing channel in util/security/Password.java, which makes it easier for remote attackers to obtain access by observing elapsed times before rejection of incorrect passwords.

CVE-2018-12536

On webapps deployed using default Error Handling, when an intentionally bad query arrives that doesn't match a dynamic url-pattern, and is eventually handled by the DefaultServlet's static file serving, the bad characters can trigger a java.nio.file.InvalidPathException which includes the full path to the base resource directory that the DefaultServlet and/or webapp is using. If this InvalidPathException is then handled by the default Error Handler, the InvalidPathException message is included in the error response, revealing the full server path to the requesting system.

CVE-2019-10241

The server is vulnerable to XSS conditions if a remote client USES a specially formatted URL against the DefaultServlet or ResourceHandler that is configured for showing a Listing of directory contents.

CVE-2019-10247

The server running on any OS and Jetty version combination will reveal the configured fully qualified directory base resource location on the output of the 404 error for not finding a Context that matches the requested path. The default server behavior on jetty-distribution and jetty-home will include at the end of the Handler tree a DefaultHandler, which is responsible for reporting this 404 error, it presents the various configured contexts as HTML for users to click through to. This produced HTML includes output that contains the configured fully qualified directory base resource location for each context.

CVE-2020-27216

On Unix like systems, the system's temporary directory is shared between all users on that system. A collocated user can observe the process of creating a temporary sub directory in the shared temporary directory and race to complete the creation of the temporary subdirectory. If the attacker wins the race then they will have read and write permission to the subdirectory used to unpack web applications, including their WEB-INF/lib jar files and JSP files. If any code is ever executed out of this temporary directory, this can lead to a local privilege escalation vulnerability.

This update also includes several other bug fixes and improvements.
For more information please refer to the upstream changelog file.

For Debian 9 stretch, these problems have been fixed in version 9.2.30-0+deb9u1.

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 Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:5168 advisory.

  - jetty: local temporary directory hijacking vulnerability (CVE-2020-27216)

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
161332	F5 Networks BIG-IP : Eclipse Jetty vulnerability (K18484125)	Nessus	F5 Networks Local Security Checks	high
113002	Jetty < 9.4.33 Local Temp Directory Hijacking	Web App Scanning	Component Vulnerability	high
152224	Debian DSA-4949-1 : jetty9 - security update	Nessus	Debian Local Security Checks	critical
151290	RHEL 7 : OpenShift Container Platform 4.5.41 (RHSA-2021:2431)	Nessus	Red Hat Local Security Checks	high
151276	RHEL 7 : OpenShift Container Platform 3.11.462 bug fix and (RHSA-2021:2517)	Nessus	Red Hat Local Security Checks	high
151117	RHEL 8 : OpenShift Container Platform 4.6.36 (RHSA-2021:2499)	Nessus	Red Hat Local Security Checks	high
149518	Debian DLA-2661-1 : jetty9 security update	Nessus	Debian Local Security Checks	high
143213	RHEL 7 : rh-eclipse (RHSA-2020:5168)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2020-27216

high

Tenable Plugins

high

high

critical

high

high

high

high

high