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

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Summary

CVECVE-2021-44832
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-12-28 20:15:08 UTC
Updated2026-05-29 20:16:21 UTC
DescriptionApache 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.

Risk And Classification

Primary CVSS: v3.1 6.6 MEDIUM from [email protected]

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

Problem Types: CWE-20 | CWE-74 | CWE-20 CWE-20 Improper Input Validation | CWE-74 CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1ADPDECLARED6.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary6.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary8.5AV:N/AC:M/Au:S/C:C/I:C/A:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/Au:S/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apache Log4j All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache Log4j2 affected log4j-core 2.17.1 custom Not specified

References

ReferenceSourceLinkTags
Oracle Critical Patch Update Advisory - April 2022 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
cert-portal.siemens.com/productcert/pdf/ssa-784507.pdf af854a3a-2127-422b-91ae-364da2661108 cert-portal.siemens.com Third Party Advisory
Oracle Critical Patch Update Advisory - January 2022 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Oracle Critical Patch Update Advisory - July 2022 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
[SECURITY] Fedora 34 Update: log4j-2.17.1-1.fc34 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[LOG4J2-3293] JDBC Appender should use JNDI Manager and JNDI access should be limited. - ASF JIRA af854a3a-2127-422b-91ae-364da2661108 issues.apache.org Issue Tracking, Patch, Vendor Advisory
[SECURITY] [DLA 2870-1] apache-log4j2 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
lists.apache.org/thread/s1o5vlo78ypqxnzn6p8zf6t9shtq5143 af854a3a-2127-422b-91ae-364da2661108 lists.apache.org Mailing List, Vendor Advisory
[SECURITY] Fedora 35 Update: log4j-2.17.1-1.fc35 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Vulnerabilities in Apache Log4j Library Affecting Cisco Products: December 2021 af854a3a-2127-422b-91ae-364da2661108 tools.cisco.com Third Party Advisory
CVE-2021-44832 Apache Log4j Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
oss-security - CVE-2021-44832: Apache Log4j2 vulnerable to RCE via JDBC Appender when attacker controls configuration af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
[SECURITY] Fedora 34 Update: log4j-2.17.1-1.fc34 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 35 Update: log4j-2.17.1-1.fc35 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2021-12-27T00:00:00.000Zreported
CNA2021-12-27T00:00:00.000Zpatch proposed, 2.17.1-rc1
CNA2021-12-28T00:00:00.000Zfixed
CNA2021-12-28T00:00:00.000Zpublic

Legacy QID Mappings

  • 178977 Debian Security Update for apache-log4j2 (DLA 2870-1)
  • 180584 Debian Security Update for apache-log4j2 (CVE-2021-44832)
  • 198626 Ubuntu Security Notification for Apache Log4j 2 Vulnerabilities (USN-5222-1)
  • 20252 IBM DB2 Security Update for Log4j (6528672,6549888)
  • 240209 Red Hat Update for JBoss Enterprise Application Platform 7.4.4 (RHSA-2022:1296)
  • 240210 Red Hat Update for JBoss Enterprise Application Platform 7.4.4 (RHSA-2022:1297)
  • 282215 Fedora Security Update for log4j (FEDORA-2021-1bd9151bab)
  • 282216 Fedora Security Update for log4j (FEDORA-2021-c6f471ce0f)
  • 353129 Amazon Linux Security Advisory for aws-kinesis-agent : ALAS2-2022-1734
  • 354307 Amazon Linux Security Advisory for log4j : ALAS2022-2022-011
  • 354369 Amazon Linux Security Advisory for log4j : ALAS2022-2022-225
  • 354538 Amazon Linux Security Advisory for log4j : ALAS-2022-225
  • 376209 Apache Log4j Remote Code Execution (RCE) Vulnerability (CVE-2021-44832)
  • 376210 Apache Log4j Remote Code Execution (RCE) Vulnerability (Log4Shell) Detected Based on Qualys Log4j scan Utility (CVE-2021-44832)
  • 376425 Oracle Hypertext Transfer Protocol Server (HTTP Server) Multiple Vulnerabilities (Log4Shell) (Doc_ID_2817011.1)
  • 376473 IBM Spectrum Control Multiple Vulnerabilities (6561029)
  • 376547 Oracle PeopleSoft Enterprise PeopleTools Product Multiple Vulnerabilities (CPUAPR2022)
  • 691064 Free Berkeley Software Distribution (FreeBSD) Security Update for rundeck3 (27c822a0-addc-11ed-a9ee-dca632b19f10)
  • 730318 Palo Alto Networks (PAN-OS) Log4j Multiple Vulnerabilities (PAN-184592) (Log4Shell)
  • 730362 Neo4j Database Server Affected by Apache Log4j Security Vulnerability
  • 730371 McAfee Web Gateway Multiple Vulnerabilities (WP-3335,WP-4131,WP-4159,WP-4237,WP-4259,WP-4329,WP-4348,WP-4355,WP-4376,WP-4407,WP-4421)
  • 751571 OpenSUSE Security Update for log4j (openSUSE-SU-2021:4208-1)
  • 751576 OpenSUSE Security Update for log4j (openSUSE-SU-2022:0002-1)
  • 87483 Oracle WebLogic Server Multiple Vulnerabilities (Log4Shell) (Doc_ID_2817011.1)
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