CVE-2021-45105

medium

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.

References

https://www.zerodayinitiative.com/advisories/ZDI-21-1541/

https://www.oracle.com/security-alerts/cpujul2022.html

https://www.oracle.com/security-alerts/cpujan2022.html

https://www.oracle.com/security-alerts/cpuapr2022.html

https://www.kb.cert.org/vuls/id/930724

https://www.debian.org/security/2021/dsa-5024

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd

https://security.netapp.com/advisory/ntap-20211218-0001/

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032

https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf

https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf

http://www.openwall.com/lists/oss-security/2021/12/19/1

https://thehackernews.com/2023/12/behind-scenes-of-matveevs-ransomware.html

https://www.tenable.com/blog/aa22-257a-cybersecurity-joint-advisory-on-iranian-islamic-revolutionary-guard-ransomware

https://www.tenable.com/blog/oracle-january-2022-critical-patch-update-addresses-266-cves

https://www.tenable.com/blog/cve-2021-44228-cve-2021-45046-cve-2021-4104-frequently-asked-questions-about-log4shell

https://logging.apache.org/log4j/2.x/security.html

Details

Source: Mitre, NVD

Published: 2021-12-18

Updated: 2024-11-21

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.65452