CVE-2021-44832
Apache Log4j2 vulnerable to RCE via JDBC Appender when attacker controls configuration
- State
- Published
- Severity
- 6.6 Medium
- Published
- Dec 28, 2021
- Updated
- May 29, 2026
- Reserved
- Dec 11, 2021
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.6 Medium | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Apache Log4j2Apache Software Foundation |
|
References
- 20211210 Vulnerabilities in Apache Log4j Library Affecting Cisco Products: December 2021vendor-advisory
- https://lists.apache.org/thread/s1o5vlo78ypqxnzn6p8zf6t9shtq5143
- https://issues.apache.org/jira/browse/LOG4J2-3293
- [oss-security] 20211228 CVE-2021-44832: Apache Log4j2 vulnerable to RCE via JDBC Appender when attacker controls configurationmailing-list
- [debian-lts-announce] 20211229 [SECURITY] [DLA 2870-1] apache-log4j2 security updatemailing-list
- https://cert-portal.siemens.com/productcert/pdf/ssa-784507.pdf
- FEDORA-2021-c6f471ce0fvendor-advisory
- FEDORA-2021-1bd9151babvendor-advisory
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://security.netapp.com/advisory/ntap-20220104-0001/
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
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