File Upload Vulnerability in CMS Made Simple by CMSMadeSimple.org
CVE-2021-28998

7.2HIGH

Key Information:

Vendor

Cmsmadesimple

Status
Cms Made Simple
Vendor
CVE Published:
8 May 2023

What is CVE-2021-28998?

CMS Made Simple has a vulnerability that permits remote authenticated attackers to upload a crafted PHAR file, which can lead to the installation of a webshell. This exploitation allows attackers to execute arbitrary code, potentially compromising the security of the affected instance. This issue pertains to CMS Made Simple versions prior to 2.2.15, necessitating immediate attention from administrators to mitigate risks associated with unauthorized file uploads.

References

https://seclists.org/fulldisclosure/2021/Mar/50
https://github.com/beerpwn/CVE/blob/master/cms_made_simpl...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.