CVE-2021-28998 : File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authen

File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers to gain a webshell via a crafted phar file.

Published 2023-05-08 14:15:11

Updated 2023-05-12 15:35:42

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2021-28998

Cmsmadesimple » Cms Made Simple
Versions up to, including, (<=) 2.2.15
cpe:2.3:a:cmsmadesimple:cms_made_simple:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.24%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 61 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
7.2	HIGH	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	1.2	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: High User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-434 Unrestricted Upload of File with Dangerous Type

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

Assigned by: nvd@nist.gov (Primary)

https://github.com/beerpwn/CVE/blob/master/cms_made_simple_2021/file_upload_RCE/File_upload_to_RCE.md

CVE/File_upload_to_RCE.md at master · beerpwn/CVE · GitHub
Exploit
https://seclists.org/fulldisclosure/2021/Mar/50

Full Disclosure: MS Made Simple - File upload bypass with .phar extension lead to RCE
Mailing List;Third Party Advisory

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