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CVE-2021-45105Date: (C)2021-12-20   (M)2023-12-22


Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 5.9CVSS Score : 4.3
Exploit Score: 2.2Exploit Score: 8.6
Impact Score: 3.6Impact Score: 2.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: HIGHAccess Complexity: MEDIUM
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: NONE
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: NONEAvailability: PARTIAL
Integrity: NONE 
Availability: HIGH 
  
Reference:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
DSA-5024
N/A
VU#930724
http://www.openwall.com/lists/oss-security/2021/12/19/1
https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf
https://logging.apache.org/log4j/2.x/security.html
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032
https://security.netapp.com/advisory/ntap-20211218-0001/
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.zerodayinitiative.com/advisories/ZDI-21-1541/

CWE    1
CWE-20
OVAL    11
oval:org.secpod.oval:def:78648
oval:org.secpod.oval:def:78162
oval:org.secpod.oval:def:76608
oval:org.secpod.oval:def:605712
...

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