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CVE-2021-4104

high · 7.5

JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j configuration. The attacker can provide TopicBindingName and TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result in remote code execution in a similar fashion to CVE-2021-44228. Note this issue only affects Log4j 1.2 when specifically configured to use JMSAppender, which is not the default. Apache Log4j 1.2 reached end of life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the previous versions.

7.5
CVSS
81.1%
EPSS (exploit prob.)
100th
EPSS percentile
2021-12-14
Published

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-502

Affected products

VendorProductAffected versions
apachelog4j1.2
fedoraprojectfedora35
redhatcodeready_studio12.0
redhatintegration_camel_kall versions
redhatintegration_camel_quarkusall versions
redhatjboss_a-mq6.0.0
redhatjboss_a-mq7
redhatjboss_a-mq_streamingall versions
redhatjboss_data_grid7.0.0
redhatjboss_data_virtualization6.0.0
redhatjboss_enterprise_application_platform6.0.0
redhatjboss_enterprise_application_platform7.0
redhatjboss_fuse6.0.0
redhatjboss_fuse7.0.0
redhatjboss_fuse_service_works6.0
redhatjboss_operations_network3.0
redhatjboss_web_server3.0
redhatopenshift_application_runtimesall versions
redhatopenshift_container_platform4.6
redhatopenshift_container_platform4.7
redhatopenshift_container_platform4.8
redhatprocess_automation7.0
redhatsingle_sign-on7.0
redhatsoftware_collectionsall versions
redhatenterprise_linux6.0
redhatenterprise_linux7.0
redhatenterprise_linux8.0
oracleadvanced_supply_chain_planning12.1
oracleadvanced_supply_chain_planning12.2
oraclebusiness_intelligence5.9.0.0.0
oraclebusiness_intelligence12.2.1.3.0
oraclebusiness_intelligence12.2.1.4.0
oraclebusiness_process_management_suite12.2.1.3.0
oraclebusiness_process_management_suite12.2.1.4.0
oraclecommunications_eagle_ftp_table_base_retrieval4.5
oraclecommunications_messaging_server8.1
oraclecommunications_network_integrity7.3.6
oraclecommunications_offline_mediation_controller< 12.0.0.4.0
oraclecommunications_offline_mediation_controller12.0.0.5.0
oraclecommunications_unified_inventory_management7.3.4

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2021-4104