RCE in Os4ed Opensis

CVE-2020-6144

A remote code execution vulnerability exists in the install functionality of OS4Ed openSIS 7.4. The username variable which is set at line 121 in install/Step5.php allows for injection of PHP code into the Data.php file that it writes. An attacker can send an HTTP request to trigger this vulnerability.

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: 0.062 (93.4th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.4% 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-2020-6144: held from 0.062 to 0.062.

EPSS over last 30 days · oldest: 0.062 · newest: 0.062 · change: 0.000

Affected products

  • Os4ed Opensis — versions 7.4
  • Os4ed — versions OS4Ed openSIS 7.4

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-6144?
CVE-2020-6144 is a critical-severity vulnerability in Os4ed Opensis, classified under Improper Neutralization of Directives in Statically Saved Code (Static Code Injection). CVSS score: 9.8/10. Published 2020-09-01.
How severe is CVE-2020-6144?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-6144 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.