CVE-2020-27387

Public Exploit

Description

An unrestricted file upload issue in HorizontCMS through 1.0.0-beta allows an authenticated remote attacker (with access to the FileManager) to upload and execute arbitrary PHP code by uploading a PHP payload, and then using the FileManager's rename function to provide the payload (which will receive a random name on the server) with the PHP extension, and finally executing the PHP file via an HTTP GET request to /storage/<php_file_name>. NOTE: the vendor has patched this while leaving the version number at 1.0.0-beta.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 73.66% Top 5%
Third-Party Advisory packetstormsecurity.com Third-Party Advisory vonahi.io Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/rapid7/metasploit-framework/pull/14340 third party advisory
https://github.com/ttimot24/HorizontCMS/commit/436b5ab679fd27afa3d99c023dbe103113da4fee third party advisory patch
https://blog.vonahi.io/whats-in-a-re-name/ exploit third party advisory patch
http://packetstormsecurity.com/files/160046/HorizontCMS-1.0.0-beta-Shell-Upload.html exploit vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-27387?
CVE-2020-27387 has been scored as a high severity vulnerability.
How to fix CVE-2020-27387?
To fix CVE-2020-27387, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27387 being actively exploited in the wild?
It is possible that CVE-2020-27387 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~74% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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