A flaw was found in jboss-remoting in versions before 5.0.20.SP1-redhat-00001. A malicious attacker could cause threads to hold up forever in the EJB server by writing a sequence of bytes corresponding to the expected messages of a successful EJB client request, but omitting the ACK messages, or just tamper with jboss-remoting code, deleting the lines that send the ACK message from the EJB client code resulting in a denial of service. The highest threat from this vulnerability is to system availability.

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

  - A flaw was found in jboss-remoting in versions before 5.0.20.SP1-redhat-00001. A malicious attacker could
    cause threads to hold up forever in the EJB server by writing a sequence of bytes corresponding to the
    expected messages of a successful EJB client request, but omitting the ACK messages, or just tamper with
    jboss-remoting code, deleting the lines that send the ACK message from the EJB client code resulting in a
    denial of service. The highest threat from this vulnerability is to system availability. (CVE-2020-35510)

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
417341	SCA: security update for org.jboss.remoting:jboss-remoting (GHSA-p6j8-hgv5-m35g)	Tenable Cloud Security	SCA Checks	medium
417341	SCA: security update for org.jboss.remoting:jboss-remoting (GHSA-p6j8-hgv5-m35g)	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-2020-35510

medium

Tenable Plugins

medium

medium

high

high

high