CVE-2021-45105 Information

Description

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 Vector

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

Reference

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.debian.org/security/2021/dsa-5024 https://www.zerodayinitiative.com/advisories/ZDI-21-1541/ https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf https://www.kb.cert.org/vuls/id/930724 https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032 https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf https://www.oracle.com/security-alerts/cpujan2022.html https://www.oracle.com/security-alerts/cpuapr2022.html

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.9