Vulnerability-Lookup

OESA-2021-1481 (CVE-2021-44832)

Vulnerability from osv_openeuler – Published: 2021-12-31 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

log4j security update

Details

Log4j is a tool to help the programmer output log statements to a variety of output targets.

Security Fix(es):

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 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.(CVE-2021-44832)

Severity

6.6 (Medium)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-44832	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
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          "log4j-taglib-2.17.0-3.oe1.noarch.rpm",
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          "log4j-jmx-gui-2.17.0-3.oe1.noarch.rpm",
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          "log4j-bom-2.17.0-3.oe1.noarch.rpm",
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      },
      "ranges": [
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          "avalon-framework-4.3-25.oe1.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP2",
        "name": "log4j,mybatis,netty,springframework,wildfly-security-manager,wildfly-elytron,wildfly-build-tools,wildfly-common,wildfly-core,thrift,json-lib,datanucleus-core,jgroups,mx4j,jboss-logging,infinispan,datanucleus-rdbms,avalon-logkit,datanucleus-api-jdo,avalon-framework,HikariCP,metrics",
        "purl": "pkg:rpm/openEuler/log4j,mybatis,netty,springframework,wildfly-security-manager,wildfly-elytron,wildfly-build-tools,wildfly-common,wildfly-core,thrift,json-lib,datanucleus-core,jgroups,mx4j,jboss-logging,infinispan,datanucleus-rdbms,avalon-logkit,datanucleus-api-jdo,avalon-framework,HikariCP,metrics\u0026distro=openEuler-20.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "avalon-framework-4.3-25.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Log4j is a tool to help the programmer output log statements to a variety of output targets.\r\n\r\nSecurity Fix(es):\r\n\r\nApache 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 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.(CVE-2021-44832)",
  "id": "OESA-2021-1481",
  "modified": "2026-08-06T11:04:45Z",
  "published": "2021-12-31T11:04:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1481"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-44832"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "log4j security update",
  "upstream": [
    "CVE-2021-44832"
  ]
}

CVE-2021-44832 (GCVE-0-2021-44832)

Vulnerability from cvelistv5 – Published: 2021-12-28 19:35 – Updated: 2026-05-29 18:53

Title

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

Summary

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.

Severity

6.6 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-29 18:53 UTC

CWE

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

Assigner

apache mitre root

References

12 references

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO
https://lists.apache.org/thread/s1o5vlo78ypqxnzn6…	x_refsource_MISC
https://issues.apache.org/jira/browse/LOG4J2-3293	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/12/28/1	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://www.oracle.com/security-alerts/cpujan2022.html	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2022010…	x_refsource_CONFIRM
https://www.oracle.com/security-alerts/cpuapr2022.html	x_refsource_MISC
https://www.oracle.com/security-alerts/cpujul2022.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Log4j2	Affected: log4j-core , < 2.17.1 (custom)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2021-1481 (CVE-2021-44832)

CVE-2021-44832 (GCVE-0-2021-44832)

Tags

Sightings

Nomenclature

Related by attack behaviour