ID

VAR-202112-1782

CVE

CVE-2021-45105

TITLE

Apache Log4j StrSubstitutor Uncontrolled Recursion Denial-of-Service Vulnerability

DESCRIPTION

Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Apache Log4j. Authentication is not required to exploit this vulnerability.The specific flaw exists within the StrSubstitutor class. The issue results from the lack of proper validation of user-supplied data, which can result in a resource exhaustion condition. An attacker can leverage this vulnerability to create a denial-of-service condition on the process. Log4j is an open source project of Apache. By using Log4j, the destination of log information transmission can be controlled to be console, file, GUI component, even socket server, NT event recorder, etc. Apache Log4j2 has a denial of service vulnerability. This vulnerability is due to the fact that Apache Log4j2 is configured with a non-default Pattern Layout scenario with Context Lookup (for example: $${ctx:loginId}), attackers can use this vulnerability to construct malicious data and execute denial of service without authorization attack, eventually causing the server to denial of service. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: Red Hat Data Grid 8.2.3 security update Advisory ID: RHSA-2022:0205-01 Product: Red Hat JBoss Data Grid Advisory URL: https://access.redhat.com/errata/RHSA-2022:0205 Issue date: 2022-01-20 CVE Names: CVE-2021-44832 CVE-2021-45046 CVE-2021-45105 ===================================================================== 1. Summary: An update for Red Hat Data Grid is now available. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Description: Red Hat Data Grid is an in-memory, distributed, NoSQL datastore solution. It increases application response times and allows for dramatically improving performance while providing availability, reliability, and elastic scale. Data Grid 8.2.3 replaces Data Grid 8.2.2 and includes bug fixes and enhancements. Find out more about Data Grid 8.2.3 in the Release Notes [3]. Security Fix(es): * log4j-core: remote code execution via JDBC Appender (CVE-2021-44832) * log4j-core: DoS in log4j 2.x with thread context message pattern and context lookup pattern (incomplete fix for CVE-2021-44228) (CVE-2021-45046) * log4j-core: DoS in log4j 2.x with Thread Context Map (MDC) input data contains a recursive lookup and context lookup pattern (CVE-2021-45105) 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. 3. Solution: To install this update, do the following: 1. Download the Data Grid 8.2.3 server patch from the customer portal[²]. 2. Back up your existing Data Grid installation. You should back up databases, configuration files, and so on. 3. Install the Data Grid 8.2.3 server patch. Refer to the 8.2.3 Release Notes[³] for patching instructions. 4. Restart Data Grid to ensure the changes take effect. 4. Bugs fixed (https://bugzilla.redhat.com/): 2032580 - CVE-2021-45046 log4j-core: DoS in log4j 2.x with thread context message pattern and context lookup pattern (incomplete fix for CVE-2021-44228) 2034067 - CVE-2021-45105 log4j-core: DoS in log4j 2.x with Thread Context Map (MDC) input data contains a recursive lookup and context lookup pattern 2035951 - CVE-2021-44832 log4j-core: remote code execution via JDBC Appender 5. References: https://access.redhat.com/security/cve/CVE-2021-44832 https://access.redhat.com/security/cve/CVE-2021-45046 https://access.redhat.com/security/cve/CVE-2021-45105 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?downloadType=securityPatches&product=data.grid&version=8.2 https://access.redhat.com/documentation/en-us/red_hat_data_grid/8.2/html-single/red_hat_data_grid_8.2_release_notes/index 6. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2022 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYemZbtzjgjWX9erEAQgkThAAhlH9r6fZ08ZbIvy7t5FNceA93qd12PsL bJEZ9axgCc1hrxm5hK2W6x55a2tKQ0ieoFlkF87qZ5FSsEmOWfvCa5Jsr04bGkhI QBiyZvX+de8ZAUcbiXwgsb3LwfY5DAOoLZVZj7tWsxXcl9CG/MGqI452b5jB4oWa 5TXa8YHSz9/vQHtJGmjyuZYJGfH63XvLUu6qHEgCHKhXEQg5p9YrfjbdZWk77mSk N+dqHpXJFo2G+UURxBy615ebIgxA1dUR6pdbCfm/fbUAxnxWPubjNLLGShCUNBP9 /WgSMiv5GT48yhpK0IdTpPmQUAQW3fkgEd58vytgDuQf/7NhsbNFlsj3hugnAmY9 B/Jtwri/dCaOy0EDlDTc22OX7uDXaoSd9t5kjFAiZMOhxRE0hXawGfCxdGq/rgV6 EblcKQ3zW/3lsTj5KdI+0M0kNA6y1i0KP+Iujs12WLzWDANcpyvpuNu5qIMoM16Y iy4QLJkWFcH99toKO6/bEFgINq3C84sDEQNUpgwga+ct5mxsZycn3vSl9QcuoWQD FX9lwXBaxGuvBb/K3pwXfJuRQOFn2tDpwqN0PnyG/4+QLHunSPuQ8vcVx+oG9a2K LpiYxMQawsJiOjEyNUdRt7DDBpU/mVO+pf7lCY/4F5S+xOJ6E6LkJ213aSGaYPBd QiLGYFSmmLk= =y5SE -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . The References section of this erratum contains a download link (you must log in to download the update). Description: 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 7.4.4 serves as a replacement for Red Hat JBoss Enterprise Application Platform 7.4.3 and includes bug fixes and enhancements. See the Red Hat JBoss Enterprise Application Platform 7.4.4 Release Notes for information about the most significant bug fixes and enhancements included in this release. Solution: Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. JIRA issues fixed (https://issues.jboss.org/): JBEAP-22105 - (7.4.z) Upgrade from com.io7m.xom:xom 1.2.10 to xom:xom 1.3.7 JBEAP-22385 - (7.4.z) Upgrade ASM from 7.1 to 9.1 JBEAP-22731 - (7.4.z) Upgrade Artemis from 2.16.0.redhat-00032 to 2.16.0.redhat-00034 JBEAP-22738 - (7.4.z) Upgrade jbossws-cxf from 5.4.2.Final to 5.4.4.Final(Fix UsernameTokenElytronTestCase on SE 17) JBEAP-22819 - [GSS] (7.4.z) HAL-1762 - Aliases are removed from the credential store when passwords are updated from the admin console JBEAP-22839 - [GSS](7.4.z) Upgrade yasson from 1.0.9.redhat-00001 to 1.0.10.redhat-00001 JBEAP-22864 - (7.4.z) Upgrade HAL from 3.3.8.Final-redhat-00001 to 3.3.9.Final-redhat-00001 JBEAP-22899 - Tracker bug for the EAP 7.4.4 release for RHEL-7 JBEAP-22904 - (7.4.z) Upgrade Hibernate ORM from 5.3.24.Final-redhat-00001 to 5.3.25.Final-redhat-00002 JBEAP-22911 - (7.4.z) Upgrade OpenSSL from 2.1.3.Final-redhat-00001 to 2.2.0.Final-redhat-00001 JBEAP-22912 - (7.4.z) Upgrade OpenSSL Natives from 2.1.0.SP01-redhat-00001 to 2.2.0.Final-redhat-00001 JBEAP-22913 - (7.4.z) Upgrade WildFly Core from 15.0.6.Final-redhat-00003 to 15.0.7.Final-redhat-00001 JBEAP-22935 - (7.4.z) Upgrade jboss-vfs from 3.2.15.Final-redhat-00001 to 3.2.16.Final-redhat-00001 JBEAP-22945 - (7.4.z) Upgrade org.apache.logging.log4j from 2.14.0.redhat-00002 to 2.17.1.redhat-00001 JBEAP-22973 - (7.4.z) Upgrade Elytron from 1.15.9.Final-redhat-00001 to 1.15.11.Final-redhat-00002 JBEAP-23038 - (7.4.z) Upgrade galleon-plugins from 5.1.4.Final to 5.2.6.Final JBEAP-23040 - (7.4.z) Upgrade galleon-plugins in wildfly-core-eap from 5.1.4.Final to 5.2.6.Final JBEAP-23045 - (7.4.z) Upgrade Undertow from 2.2.13.SP2-redhat-00001 to 2.2.16.Final-redhat-0001 JBEAP-23101 - (7.4.z) Upgrade Infinispan from 11.0.12.Final to 11.0.15.Final JBEAP-23105 - (7.4.z) Upgrade Narayana from 5.11.3.Final-redhat-00001 to 5.11.4.Final-redhat-00001 JBEAP-23143 - (7.4.z) Upgrade from org.eclipse.jdt.core.compiler:ecj:4.6.1 to org.eclipse.jdt:ecj:3.26 JBEAP-23177 - (7.4.z) Upgrade XNIO from 3.8.5.SP1-redhat-00001 to 3.8.6.Final-redhat-00001 JBEAP-23323 - [GSS](7.4.z) WFLY-16112 - Batch JobOperatorService should look for only active job names to stop during suspend JBEAP-23373 - (7.4.z) Upgrade OpenSSL from 2.2.0.Final-redhat-00001 to 2.2.0.Final-redhat-00002 JBEAP-23374 - (7.4.z) Upgrade WildFly Core from 15.0.7.Final-redhat-00001 to 15.0.8.Final-redhat-00001 JBEAP-23375 - (7.4.z) Upgrade OpenSSL Natives from 2.2.0.Final-redhat-00001 to 2.2.0.Final-redhat-00002 7. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 8. Description: Red Hat Single Sign-On 7.5 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. JIRA issues fixed (https://issues.jboss.org/): LOG-2073 - The elasticsearch-im-xxx job failed when trying to start index management process for a non-existent(empty-named) index [openshift-logging-5.2] LOG-2087 - resourceVersion is overflowing type Integer causing ES rejection 6. ========================================================================== Ubuntu Security Notice USN-5203-1 December 19, 2021 apache-log4j2 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.10 - Ubuntu 21.04 - Ubuntu 20.04 LTS Summary: Apache Log4j 2 could be made to crash if it received specially crafted input. Software Description: - apache-log4j2: Apache Log4j - Logging Framework for Java Details: Hideki Okamoto and Guy Lederfein discovered that Apache Log4j 2 did not protect against infinite recursion in lookup evaluation. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.10: liblog4j2-java 2.17.0-0.21.10.1 Ubuntu 21.04: liblog4j2-java 2.17.0-0.21.04.1 Ubuntu 20.04 LTS: liblog4j2-java 2.17.0-0.20.04.1 In general, a standard system update will make all the necessary changes

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

code execution

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Guy Lederfein of Trend Micro Security Research

SOURCES

LAST UPDATE DATE

2026-08-08T20:05:37.994000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE