Arbitrary file upload in Zrlog

CVE-2021-44093

A Remote Command Execution vulnerability on the background in zrlog 2.2.2, at the upload avatar function, could bypass the original limit, upload the JSP file to get a WebShell

Vulnerability class: Unrestricted File Upload

EPSS: 0.025 (83.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Zrlog — versions 2.2.2
  • N/a — versions n/a

Weakness classification (CWE)

References

  • cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-44093?
CVE-2021-44093 is a critical-severity vulnerability in Zrlog, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-11-28.
How severe is CVE-2021-44093?
Critical severity. CVSS v3 base score is 9.8 out of 10.