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Advisory details: gitlab / maven/org.apache.logging.log4j/log4j-core/CVE-2021-44832
Advisory ID gitlab/maven/org.apache.logging.log4j/log4j-core/CVE-2021-44832
Aliases CVE-2021-44832
GHSA-8489-44mv-ggj8
Summary Improper Input Validation and Injection in Apache Log4j2 Apache Log4j2 versions 2.0-beta7 through 2.17.0 (excluding security fix releases 2.3.2 and 2.12.4) are vulnerable to an attack where an attacker with permission to modify the logging configuration file can construct a malicious configuration using a JDBC Appender with a data source referencing a JNDI URI which can execute remote code. 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.
Status Published
Exploitability 2.0
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (4)
CWE-20 Improper Input Validation
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3.1 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.apache.logging.log4j/log4j-core/CVE-2021-44832.yml
Reference id Reference type URL
https://cert-portal.siemens.com/productcert/pdf/ssa-784507.pdf
https://issues.apache.org/jira/browse/LOG4J2-3293
https://lists.apache.org/thread/s1o5vlo78ypqxnzn6p8zf6t9shtq5143
https://lists.debian.org/debian-lts-announce/2021/12/msg00036.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EVV25FXL4FU5X6X5BSL7RLQ7T6F65MRA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T57MPJUW3MA6QGWZRTMCHHMMPQNVKGFC
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EVV25FXL4FU5X6X5BSL7RLQ7T6F65MRA
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T57MPJUW3MA6QGWZRTMCHHMMPQNVKGFC
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
https://security.netapp.com/advisory/ntap-20220104-0001
cisco-sa-apache-log4j-qRuKNEbd Advisory https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
cpuapr2022.html Other https://www.oracle.com/security-alerts/cpuapr2022.html
cpujan2022.html Other https://www.oracle.com/security-alerts/cpujan2022.html
cpujul2022.html Other https://www.oracle.com/security-alerts/cpujul2022.html
CVE-2021-44832 https://nvd.nist.gov/vuln/detail/CVE-2021-44832
GHSA-8489-44mv-ggj8 https://github.com/advisories/GHSA-8489-44mv-ggj8
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.apache.logging.log4j/log4j-core/CVE-2021-44832.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-05-29T18:53:35Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2021/44xxx/CVE-2021-44832.json

Source Advisory: vulnrichment/CVE-2021-44832

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'no'},
 {'Technical Impact': 'total'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]