Auth bypass in Magmi Project

CVE-2020-5777

MAGMI versions prior to 0.7.24 are vulnerable to a remote authentication bypass due to allowing default credentials in the event there is a database connection failure. A remote attacker can trigger this connection failure if the Mysql setting max_connections (default 151) is lower than Apache (or another web server) setting MaxRequestWorkers (formerly MaxClients) (default 256). This can be done by sending at least 151 simultaneous requests to the Magento website to trigger a "Too many connections" error, then use default magmi:magmi basic authentication to remotely bypass authentication.

Vulnerability class: Broken Authentication

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.233 (97.7th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2020-5777: held from 0.233 to 0.233.

EPSS over last 30 days · oldest: 0.233 · newest: 0.233 · change: 0.000

Affected products

  • Magmi Project
  • Magmi — versions All versions prior to version 0.7.24

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-5777?
CVE-2020-5777 is a critical-severity vulnerability in Magmi Project, classified under Improper Authentication. CVSS score: 9.8/10. Published 2020-09-01.
How severe is CVE-2020-5777?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-5777 known to be exploited?
10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.