Vulnerability DatabaseCVE-2021-45105
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CVE-2021-45105
December 18, 2021
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.
Affected Packages
org.ops4j.pax.logging:pax-logging-log4j2 (JAVA):
Affected version(s) >=1.8.0 <1.9.2
Fix Suggestion:
Update to version 1.9.2
org.apache.logging.log4j:log4j-core (JAVA):
Affected version(s) >=2.0-alpha1 <2.3.1
Fix Suggestion:
Update to version 2.3.1
org.apache.logging.log4j:log4j-core (JAVA):
Affected version(s) >=2.13.0 <2.17.0
Fix Suggestion:
Update to version 2.17.0
org.apache.logging.log4j:log4j-core (JAVA):
Affected version(s) >=2.4 <2.12.3
Fix Suggestion:
Update to version 2.12.3
org.ops4j.pax.logging:pax-logging-log4j2 (JAVA):
Affected version(s) >=1.11.0 <1.11.12
Fix Suggestion:
Update to version 1.11.12
org.ops4j.pax.logging:pax-logging-log4j2 (JAVA):
Affected version(s) >=1.10.0 <1.10.9
Fix Suggestion:
Update to version 1.10.9
org.ops4j.pax.logging:pax-logging-log4j2 (JAVA):
Affected version(s) >=2.0.0 <2.0.13
Fix Suggestion:
Update to version 2.0.13
Related Resources (20)
https://lists.debian.org/debian-lts-announce/2021/12/msg00017.html
https://nvd.nist.gov/vuln/detail/CVE-2021-45105
https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf
https://security.netapp.com/advisory/ntap-20211218-0001/
https://www.oracle.com/security-alerts/cpujul2022.html
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.zerodayinitiative.com/advisories/ZDI-21-1541
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032
https://www.zerodayinitiative.com/advisories/ZDI-21-1541/
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
https://www.debian.org/security/2021/dsa-5024
https://www.kb.cert.org/vuls/id/930724
https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
https://logging.apache.org/log4j/2.x/security.html
https://security.netapp.com/advisory/ntap-20211218-0001
http://www.openwall.com/lists/oss-security/2021/12/19/1
https://www.oracle.com/security-alerts/cpujan2022.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EOKPQGV24RRBBI4TBZUDQMM4MEH7MXCY
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SIG7FZULMNK2XF6FZRU4VWYDQXNMUGAJ
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
ATTACKED
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Exploit Maturity
HIGH
CVSS v2
Base Score:
4.3
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Weakness Type (CWE)
Improper Input Validation
CWE-20
Uncontrolled Recursion
CWE-674
EPSS
Base Score:
10.0