A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.

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

  - A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling     related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in     an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain     sensitive information from request other than their own. The highest threat from this vulnerability is to     data confidentiality and integrity. (CVE-2021-20220)

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:

  - A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling
    related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in
    an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain
    sensitive information from request other than their own. The highest threat from this vulnerability is to
    data confidentiality and integrity. (CVE-2021-20220)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0874 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime.

    This release of Red Hat JBoss Enterprise Application Platform 7.3.6 serves as a replacement for Red Hat     JBoss Enterprise Application Platform 7.3.5, and includes bug fixes and enhancements. See the Red Hat     JBoss Enterprise Application Platform 7.3.6 Release Notes for information about the most significant bug     fixes and enhancements included in this release.

    Security Fix(es):

    * jboss-remoting: Threads hold up forever in the EJB server by suppressing the ack from an EJB client     (CVE-2020-35510)

    * bouncycastle: password bypass in OpenBSDBCrypt.checkPassword utility possible (CVE-2020-28052)

    * wildfly-undertow: undertow: Possible regression in fix for CVE-2020-10687 (CVE-2021-20220)

    * jboss-ejb-client: wildfly: Information disclosure due to publicly accessible privileged actions in JBoss     EJB Client (CVE-2021-20250)

    * guava: local information disclosure via temporary directory created with unsafe permissions     (CVE-2020-8908)

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 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0873 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime.

    This release of Red Hat JBoss Enterprise Application Platform 7.3.6 serves as a replacement for Red Hat     JBoss Enterprise Application Platform 7.3.5, and includes bug fixes and enhancements. See the Red Hat     JBoss Enterprise Application Platform 7.3.6 Release Notes for information about the most significant bug     fixes and enhancements included in this release.

    Security Fix(es):

    * jboss-remoting: Threads hold up forever in the EJB server by suppressing the ack from an EJB client     (CVE-2020-35510)

    * bouncycastle: password bypass in OpenBSDBCrypt.checkPassword utility possible (CVE-2020-28052)

    * wildfly-undertow: undertow: Possible regression in fix for CVE-2020-10687 (CVE-2021-20220)

    * jboss-ejb-client: wildfly: Information disclosure due to publicly accessible privileged actions in JBoss     EJB Client (CVE-2021-20250)

    * guava: local information disclosure via temporary directory created with unsafe permissions     (CVE-2020-8908)

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 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0872 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime.

    This release of Red Hat JBoss Enterprise Application Platform 7.3.6 serves as a replacement for Red Hat     JBoss Enterprise Application Platform 7.3.5, and includes bug fixes and enhancements. See the Red Hat     JBoss Enterprise Application Platform 7.3.6 Release Notes for information about the most significant bug     fixes and enhancements included in this release.

    Security Fix(es):

    * jboss-remoting: Threads hold up forever in the EJB server by suppressing the ack from an EJB client     (CVE-2020-35510)

    * bouncycastle: password bypass in OpenBSDBCrypt.checkPassword utility possible (CVE-2020-28052)

    * wildfly-undertow: undertow: Possible regression in fix for CVE-2020-10687 (CVE-2021-20220)

    * jboss-ejb-client: wildfly: Information disclosure due to publicly accessible privileged actions in JBoss     EJB Client (CVE-2021-20250)

    * guava: local information disclosure via temporary directory created with unsafe permissions     (CVE-2020-8908)

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.

ID	Name	Product	Family	Severity
252492	Linux Distros Unpatched Vulnerability : CVE-2021-20220	Nessus	Misc.	medium
418188	SCA: security update for io.undertow:undertow-core (GHSA-qjwc-v72v-fq6r)	Tenable Cloud Security	SCA Checks	medium
418188	SCA: security update for io.undertow:undertow-core (GHSA-qjwc-v72v-fq6r)	Tenable Self-Hosted Container Security	SCA Checks	medium
147838	RHEL 8 : Red Hat JBoss Enterprise Application Platform 7.3.6 (RHSA-2021:0874)	Nessus	Red Hat Local Security Checks	high
147837	RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.3.6 (RHSA-2021:0873)	Nessus	Red Hat Local Security Checks	high
147831	RHEL 6 : Red Hat JBoss Enterprise Application Platform 7.3.6 (RHSA-2021:0872)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2021-20220

medium

Tenable Plugins

medium

medium

medium

high

high

high