CVE-2021-45046 KEV
Patch first
On CISA KEV — known exploited in the wild, due 2023-05-22.
Description
It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. This could allows attackers with control over Thread Context Map (MDC) input data when the logging configuration uses a non-default Pattern Layout with either a Context Lookup (for example, $${ctx:loginId}) or a Thread Context Map pattern (%X, %mdc, or %MDC) to craft malicious input data using a JNDI Lookup pattern resulting in an information leak and remote code execution in some environments and local code execution in all environments. Log4j 2.16.0 (Java 8) and 2.12.2 (Java 7) fix this issue by removing support for message lookup patterns and disabling JNDI functionality by default.
Scoring
| CVSS | 9.0 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 99.98% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-917 |
| On CISA KEV | yes — remediate by 2023-05-22 |
| Public exploit | none known |
| Published | 2021-12-14 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Apache Log4j2 Deserialization of Untrusted Data Vulnerability |
|---|---|
| Added | 2023-05-01 |
| Due | 2023-05-22 |
| Vendor / product | Apache / Log4j2 |
| Ransomware use | known |
Affected (40)
| Vendor | Product |
|---|---|
| apache | log4j |
| cvat | computer vision annotation tool |
| intel | audio development kit |
| intel | datacenter manager |
| intel | genomics kernel library |
| intel | oneapi |
| intel | secure device onboard |
| intel | sensor solution firmware development kit |
| intel | system debugger |
| intel | system studio |
| siemens | captial |
| siemens | comos |
| siemens | desigo cc advanced reports |
| siemens | desigo cc info center |
| siemens | e-car operation center |
| siemens | energy engage |
| siemens | energyip |
| siemens | energyip prepay |
| siemens | gma-manager |
| siemens | head-end system universal device integration system |
| siemens | industrial edge management |
| siemens | industrial edge management hub |
| siemens | logo\! soft comfort |
| siemens | mendix |
| siemens | mindsphere |
| siemens | navigator |
| siemens | nx |
| siemens | opcenter intelligence |
| siemens | operation scheduler |
| siemens | sentron powermanager |
| siemens | siguard dsa |
| siemens | sipass integrated |
| siemens | siveillance command |
| siemens | siveillance control pro |
| siemens | siveillance identity |
| siemens | siveillance vantage |
| siemens | siveillance viewpoint |
| siemens | solid edge cam pro |
| siemens | sppa-t3000 ses3000 |
| siemens | sppa-t3000 ses3000 firmware |
References
- http://www.openwall.com/lists/oss-security/2021/12/14/4
- http://www.openwall.com/lists/oss-security/2021/12/15/3
- http://www.openwall.com/lists/oss-security/2021/12/18/1
- https://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-661247.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdf
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EOKPQGV24RRBBI4TBZUDQMM4MEH7MXCY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SIG7FZULMNK2XF6FZRU4VWYDQXNMUGAJ/
- https://logging.apache.org/log4j/2.x/security.html
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032
- https://security.gentoo.org/glsa/202310-16
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
- https://www.cve.org/CVERecord?id=CVE-2021-44228
- https://www.debian.org/security/2021/dsa-5022
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00646.html
- https://www.kb.cert.org/vuls/id/930724
- https://www.oracle.com/security-alerts/alert-cve-2021-44228.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
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