UpHeron
All vulnerabilities

Servers and applications

CVE-2021-45105

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.

Severity
Medium 5.9
Published
18 Dec 2021
Last changed
25 Aug 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.3.1, 2.12.3
Sources
NVD

Affected software

SoftwareAffected versions
Apache Log4jServers and applications · cpe:a:apache:log4j
  • From 2.0 before 2.3.1
  • From 2.4 before 2.12.3
  • From 2.13.0 up to 2.16.0
Oracle WebLogic ServerServers and applications · cpe:a:oracle:weblogic_server
  • Version 12.2.1.3.0
  • Version 12.2.1.4.0
  • Version 14.1.1.0.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-45105
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-45105