Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2021-42392

Deserialization of Untrusted Data

Published: Jan 10, 2022 | Modified: Nov 21, 2024
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
10 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
9.8 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Ubuntu
HIGH
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-42392
CWEhttps://cwe.mitre.org/data/definitions/502.html

The org.h2.util.JdbcUtils.getConnection method of the H2 database takes as parameters the class name of the driver and URL of the database. An attacker may pass a JNDI driver name and a URL leading to a LDAP or RMI servers, causing remote code execution. This can be exploited through various attack vectors, most notably through the H2 Console which leads to unauthenticated remote code execution.

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

NameVendorStart VersionEnd Version
H2H2database1.1.000 (including)2.0.204 (including)
Red Hat JBoss Enterprise Application Platform 7RedHath2*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-hal-console-0:3.2.17-1.Final_redhat_00001.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-jackson-annotations-0:2.10.4-2.redhat_00004.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-jackson-core-0:2.10.4-2.redhat_00004.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-jackson-databind-0:2.10.4-4.redhat_00004.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-jackson-jaxrs-providers-0:2.10.4-2.redhat_00004.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-jackson-modules-base-0:2.10.4-4.redhat_00004.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-jackson-modules-java8-0:2.10.4-2.redhat_00004.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-jettison-0:1.5.2-2.redhat_00002.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-netty-0:4.1.63-4.Final_redhat_00002.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-resteasy-0:3.11.6-1.Final_redhat_00001.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-snakeyaml-0:1.33.0-1.SP1_redhat_00001.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7RedHateap7-wildfly-0:7.3.12-3.GA_redhat_00002.1.el7eap*
Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8RedHateap7-h2database-0:1.4.197-2.redhat_00004.1.el8eap*
Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7RedHateap7-h2database-0:1.4.197-2.redhat_00004.1.el7eap*
Red Hat Single Sign-On 7RedHath2*
Red Hat Single Sign-On 7.5 for RHEL 7RedHatrh-sso7-keycloak-0:15.0.8-1.redhat_00001.1.el7sso*
Red Hat Single Sign-On 7.5 for RHEL 8RedHatrh-sso7-keycloak-0:15.0.8-1.redhat_00001.1.el8sso*
Red Hat Single Sign-On 7.6.1RedHath2*
Red Hat Single Sign-On 7.6 for RHEL 7RedHatrh-sso7-keycloak-0:18.0.3-1.redhat_00001.1.el7sso*
Red Hat Single Sign-On 7.6 for RHEL 8RedHatrh-sso7-keycloak-0:18.0.3-1.redhat_00001.1.el8sso*
Red Hat Single Sign-On 7.6 for RHEL 9RedHatrh-sso7-0:1-5.el9sso*
Red Hat Single Sign-On 7.6 for RHEL 9RedHatrh-sso7-javapackages-tools-0:6.0.0-7.el9sso*
Red Hat Single Sign-On 7.6 for RHEL 9RedHatrh-sso7-keycloak-0:18.0.3-1.redhat_00001.1.el9sso*
RHINT Camel-Q 2.2.1RedHat*
H2databaseUbuntubionic*
H2databaseUbuntuesm-apps/bionic*
H2databaseUbuntuesm-apps/focal*
H2databaseUbuntuesm-apps/jammy*
H2databaseUbuntuesm-apps/xenial*
H2databaseUbuntufocal*
H2databaseUbuntuhirsute*
H2databaseUbuntuimpish*
H2databaseUbuntujammy*
H2databaseUbuntukinetic*
H2databaseUbuntulunar*
H2databaseUbuntutrusty*
H2databaseUbuntuupstream*
H2databaseUbuntuxenial*

Potential Mitigations

  • Make fields transient to protect them from deserialization.
  • An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

References

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