CVE-2021-40889 — CRITICAL (9.8)

Vulnerability Description

CMSUno version 1.7.2 is affected by a PHP code execution vulnerability. sauvePass action in {webroot}/uno/central.php file calls to file_put_contents() function to write username in password.php file when a user successfully changed their password. The attacker can inject malicious PHP code into password.php and then use the login function to execute code.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Cmsuno Project	Cmsuno	1.7.2

Related Weaknesses (CWE)

CWE-94

References

https://github.com/boiteasite/cmsuno/issues/19ExploitIssue TrackingThird Party Advisory
https://github.com/boiteasite/cmsuno/issues/19ExploitIssue TrackingThird Party Advisory

FAQ

What is CVE-2021-40889?

CVE-2021-40889 is a vulnerability with a CVSS score of 9.8 (CRITICAL). CMSUno version 1.7.2 is affected by a PHP code execution vulnerability. sauvePass action in {webroot}/uno/central.php file calls to file_put_contents() function to write username in password.php file ...

How severe is CVE-2021-40889?

CVE-2021-40889 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-40889?

Check the references section above for vendor advisories and patch information. Affected products include: Cmsuno Project Cmsuno.