CVE-2021-44832

Apache Log4j2 vulnerable to RCE via JDBC Appender when attacker controls configuration

Description

Apache Log4j2 versions 2.0-beta7 through 2.17.0 (excluding security fix releases 2.3.2 and 2.12.4) are vulnerable to a remote code execution (RCE) attack when a configuration uses a JDBC Appender with a JNDI LDAP data source URI when an attacker has control of the target LDAP server. This issue is fixed by limiting JNDI data source names to the java protocol in Log4j2 versions 2.17.1, 2.12.4, and 2.3.2.

Category

6.6
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 43.90% Top 5%
Vendor Advisory cisco.com Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory apache.org Vendor Advisory apache.org
Affected: Apache Software Foundation Apache Log4j2
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd third party advisory vendor advisory
https://lists.apache.org/thread/s1o5vlo78ypqxnzn6p8zf6t9shtq5143 mailing list vendor advisory
https://issues.apache.org/jira/browse/LOG4J2-3293 issue tracking patch vendor advisory
http://www.openwall.com/lists/oss-security/2021/12/28/1 third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2021/12/msg00036.html third party advisory mailing list
https://cert-portal.siemens.com/productcert/pdf/ssa-784507.pdf third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EVV25FXL4FU5X6X5BSL7RLQ7T6F65MRA/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T57MPJUW3MA6QGWZRTMCHHMMPQNVKGFC/ vendor advisory
https://www.oracle.com/security-alerts/cpujan2022.html third party advisory patch
https://security.netapp.com/advisory/ntap-20220104-0001/ third party advisory
https://www.oracle.com/security-alerts/cpuapr2022.html third party advisory patch
https://www.oracle.com/security-alerts/cpujul2022.html third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-44832?
CVE-2021-44832 has been scored as a medium severity vulnerability.
How to fix CVE-2021-44832?
To fix CVE-2021-44832, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-44832 being actively exploited in the wild?
It is possible that CVE-2021-44832 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~44% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-44832?
CVE-2021-44832 affects Apache Software Foundation Apache Log4j2.
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