A flaw was found in Undertow. A potential security issue in flow control handling by the browser over http/2 may potentially cause overhead or a denial of service in the server. The highest threat from this vulnerability is availability. This flaw affects Undertow versions prior to 2.0.40.Final and prior to 2.2.11.Final.

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 potential security issue in flow control handling by the browser over     http/2 may potentially cause overhead or a denial of service in the server. The highest threat from this     vulnerability is availability. This flaw affects Undertow versions prior to 2.0.40.Final and prior to     2.2.11.Final. (CVE-2021-3629)

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 potential security issue in flow control handling by the browser over
    http/2 may potentially cause overhead or a denial of service in the server. The highest threat from this
    vulnerability is availability. This flaw affects Undertow versions prior to 2.0.40.Final and prior to
    2.2.11.Final. (CVE-2021-3629)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:5151 advisory.

    This release of Red Hat JBoss Enterprise Application Platform 7.3.10 serves as a replacement for Red Hat     JBoss Enterprise Application Platform 7.3.9, and includes bug fixes and enhancements. See the Red Hat     JBoss Enterprise Application Platform 7.3.10 Release Notes for information about the most significant bug     fixes and enhancements included in this release.

    Security Fix(es):

    * undertow: potential security issue in flow control over HTTP/2 may lead to DOS (CVE-2021-3629)

    * wildfly-elytron: possible timing attack in ScramServer (CVE-2021-3642)

    * wildfly: incorrect JBOSS_LOCAL_USER challenge location may lead to giving access to all the local users     (CVE-2021-3717)

    * jsoup: Crafted input may cause the jsoup HTML and XML parser to get stuck (CVE-2021-37714)

    * xml-security: XPath Transform abuse allows for information disclosure (CVE-2021-40690)

    * resteasy: Error message exposes endpoint class information (CVE-2021-20289)

    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 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:5149 advisory.

    This release of Red Hat JBoss Enterprise Application Platform 7.3.10 serves as a replacement for Red Hat     JBoss Enterprise Application Platform 7.3.9, and includes bug fixes and enhancements. See the Red Hat     JBoss Enterprise Application Platform 7.3.10 Release Notes for information about the most significant bug     fixes and enhancements included in this release.

    Security Fix(es):

    * undertow: potential security issue in flow control over HTTP/2 may lead to DOS (CVE-2021-3629)

    * wildfly-elytron: possible timing attack in ScramServer (CVE-2021-3642)

    * wildfly: incorrect JBOSS_LOCAL_USER challenge location may lead to giving access to all the local users     (CVE-2021-3717)

    * jsoup: Crafted input may cause the jsoup HTML and XML parser to get stuck (CVE-2021-37714)

    * xml-security: XPath Transform abuse allows for information disclosure (CVE-2021-40690)

    * resteasy: Error message exposes endpoint class information (CVE-2021-20289)

    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 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:5150 advisory.

    This release of Red Hat JBoss Enterprise Application Platform 7.3.10 serves as a replacement for Red Hat     JBoss Enterprise Application Platform 7.3.9, and includes bug fixes and enhancements. See the Red Hat     JBoss Enterprise Application Platform 7.3.10 Release Notes for information about the most significant bug     fixes and enhancements included in this release.

    Security Fix(es):

    * undertow: potential security issue in flow control over HTTP/2 may lead to DOS (CVE-2021-3629)

    * wildfly-elytron: possible timing attack in ScramServer (CVE-2021-3642)

    * wildfly: incorrect JBOSS_LOCAL_USER challenge location may lead to giving access to all the local users     (CVE-2021-3717)

    * jsoup: Crafted input may cause the jsoup HTML and XML parser to get stuck (CVE-2021-37714)

    * xml-security: XPath Transform abuse allows for information disclosure (CVE-2021-40690)

    * resteasy: Error message exposes endpoint class information (CVE-2021-20289)

    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 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:4676 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 7.4.2 serves as a replacement for Red Hat     JBoss Enterprise Application Platform 7.4.1, and includes bug fixes and enhancements. See the Red Hat     JBoss Enterprise Application Platform 7.4.2 Release Notes for information about the most significant bug     fixes and enhancements included in this release.

    Security Fix(es):

    * undertow: potential security issue in flow control over HTTP/2 may lead to DOS (CVE-2021-3629)

    * wildfly: incorrect JBOSS_LOCAL_USER challenge location may lead to giving access to all the local users     (CVE-2021-3717)

    * mina-sshd-core: Memory leak denial of service in Apache Mina SSHD Server (CVE-2021-30129)

    * jsoup: Crafted input may cause the jsoup HTML and XML parser to get stuck (CVE-2021-37714)

    * resteasy: Error message exposes endpoint class information (CVE-2021-20289)

    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 packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:4677 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 7.4.2 serves as a replacement for Red Hat     JBoss Enterprise Application Platform 7.4.1, and includes bug fixes and enhancements. See the Red Hat     JBoss Enterprise Application Platform 7.4.2 Release Notes for information about the most significant bug     fixes and enhancements included in this release.

    Security Fix(es):

    * undertow: potential security issue in flow control over HTTP/2 may lead to DOS (CVE-2021-3629)

    * wildfly: incorrect JBOSS_LOCAL_USER challenge location may lead to giving access to all the local users     (CVE-2021-3717)

    * mina-sshd-core: Memory leak denial of service in Apache Mina SSHD Server (CVE-2021-30129)

    * jsoup: Crafted input may cause the jsoup HTML and XML parser to get stuck (CVE-2021-37714)

    * resteasy: Error message exposes endpoint class information (CVE-2021-20289)

    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.

ID	Name	Product	Family	Type	Severity
252547	Linux Distros Unpatched Vulnerability : CVE-2021-3629	Nessus	Misc.	Local	medium
418693	SCA: security update for io.undertow:undertow-core (GHSA-rf6q-vx79-mjxr)	Tenable Cloud Security	SCA Checks	Local	medium
418693	SCA: security update for io.undertow:undertow-core (GHSA-rf6q-vx79-mjxr)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
156111	RHEL 8 : Red Hat JBoss Enterprise Application Platform 7.3.10 security update on RHEL 8 (Moderate) (RHSA-2021:5151)	Nessus	Red Hat Local Security Checks	Local	high
156109	RHEL 6 : Red Hat JBoss Enterprise Application Platform 7.3.10 security update on RHEL 6 (Moderate) (RHSA-2021:5149)	Nessus	Red Hat Local Security Checks	Local	high
156106	RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.3.10 security update on RHEL 7 (Moderate) (RHSA-2021:5150)	Nessus	Red Hat Local Security Checks	Local	high
155386	RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.4.2 security update on RHEL 7 (Moderate) (RHSA-2021:4676)	Nessus	Red Hat Local Security Checks	Local	high
155365	RHEL 8 : Red Hat JBoss Enterprise Application Platform 7.4.2 security update on RHEL 8 (Moderate) (RHSA-2021:4677)	Nessus	Red Hat Local Security Checks	Local	high

Detections

Analytics

CVE-2021-3629

medium

Tenable Plugins

medium

medium

medium

high

high

high

high

high