Vulnerabilities
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CVE Vulnerabilities

CVE-2021-3642

Observable Discrepancy

Published: Aug 05, 2021 | Modified: Nov 21, 2024
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
3.5 LOW
AV:N/AC:M/Au:S/C:P/I:N/A:N
RedHat/V2
RedHat/V3
3.1 MODERATE
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Ubuntu
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-3642
CWEhttps://cwe.mitre.org/data/definitions/203.html

A flaw was found in Wildfly Elytron in versions prior to 1.10.14.Final, prior to 1.15.5.Final and prior to 1.16.1.Final where ScramServer may be susceptible to Timing Attack if enabled. The highest threat of this vulnerability is confidentiality.

Weakness

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

Affected Software

NameVendorStart VersionEnd Version
Wildfly_elytronRedhat*1.10.14 (excluding)
Wildfly_elytronRedhat1.11.0 (including)1.15.5 (excluding)
Wildfly_elytronRedhat1.16.0 (including)1.16.1 (excluding)
EAP 7.3.10 GARedHatwildfly-elytron*
Red Hat build of Quarkus 2.2.3RedHatwildfly-elytron*
Red Hat Data Grid 8.3.0RedHatwildfly-elytron*
Red Hat EAP-XP 2 via EAP 7.3.x baseRedHatwildfly-elytron*
Red Hat Fuse 7.11RedHatwildfly-elytron*
Red Hat Integration Camel Quarkus 2RedHat*
Red Hat JBoss Enterprise Application Platform 7RedHat*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-apache-cxf-0:3.3.12-1.redhat_00001.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-ironjacamar-0:1.5.3-1.Final_redhat_00001.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-jakarta-el-0:3.0.3-3.redhat_00007.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-jboss-ejb-client-0:4.0.43-1.Final_redhat_00001.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-jboss-server-migration-0:1.7.2-10.Final_redhat_00011.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-jsoup-0:1.14.2-1.redhat_00002.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-resteasy-0:3.11.5-1.Final_redhat_00001.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-undertow-0:2.0.41-1.SP1_redhat_00001.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-wildfly-0:7.3.10-2.GA_redhat_00003.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-wildfly-elytron-0:1.10.15-1.Final_redhat_00001.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-wss4j-0:2.2.7-1.redhat_00001.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6RedHateap7-xml-security-0:2.1.7-1.redhat_00001.1.el6eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-apache-cxf-0:3.3.12-1.redhat_00001.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-ironjacamar-0:1.5.3-1.Final_redhat_00001.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-jakarta-el-0:3.0.3-3.redhat_00007.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-jboss-ejb-client-0:4.0.43-1.Final_redhat_00001.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-jboss-server-migration-0:1.7.2-10.Final_redhat_00011.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-jsoup-0:1.14.2-1.redhat_00002.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-resteasy-0:3.11.5-1.Final_redhat_00001.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-undertow-0:2.0.41-1.SP1_redhat_00001.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-wildfly-0:7.3.10-2.GA_redhat_00003.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-wildfly-elytron-0:1.10.15-1.Final_redhat_00001.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-wss4j-0:2.2.7-1.redhat_00001.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7RedHateap7-xml-security-0:2.1.7-1.redhat_00001.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-apache-cxf-0:3.3.12-1.redhat_00001.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-ironjacamar-0:1.5.3-1.Final_redhat_00001.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-jakarta-el-0:3.0.3-3.redhat_00007.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-jboss-ejb-client-0:4.0.43-1.Final_redhat_00001.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-jboss-server-migration-0:1.7.2-10.Final_redhat_00011.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-jsoup-0:1.14.2-1.redhat_00002.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-resteasy-0:3.11.5-1.Final_redhat_00001.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-undertow-0:2.0.41-1.SP1_redhat_00001.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-wildfly-0:7.3.10-2.GA_redhat_00003.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-wildfly-elytron-0:1.10.15-1.Final_redhat_00001.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-wss4j-0:2.2.7-1.redhat_00001.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8RedHateap7-xml-security-0:2.1.7-1.redhat_00001.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8RedHateap7-wildfly-elytron-0:1.15.5-1.Final_redhat_00001.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7RedHateap7-wildfly-elytron-0:1.15.5-1.Final_redhat_00001.1.el7eap*
Red Hat Single Sign-On 7.4.10RedHatwildfly-elytron*
Red Hat Support for Spring Boot 2.5.10RedHatwildfly-elytron*
RHPAM 7.13.0 asyncRedHatwildfly-elytron*

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
  • Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
  • If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
  • Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.

References

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