CVE-2021-28428 File upload in n/a
Attacker can achieve remote code execution by uploading malicious .htaccess and .hello files to bypass PHP extension filters in HorizontCMS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-28428?
CVE-2021-28428 is a critical vulnerability in n/a, published on 5 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
File upload vulnerability in HorizontCMS before 1.0.0-beta.3 via uploading a .htaccess and *.hello files using the Media Files upload functionality. The original file upload vulnerability (CVE-2020-27387) was remediated by restricting the PHP extensions; however, we confirmed that the filter was bypassed via uploading an arbitrary .htaccess and *.hello files in order to execute PHP code to gain RCE.
Weakness: CWE-434
Which versions are affected by CVE-2021-28428?
It affects 1 product.
Products include Horizontcms Project Horizontcms.
How do I fix CVE-2021-28428?
No fix has been published for CVE-2021-28428 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-28428 being exploited?
There is no known exploitation of CVE-2021-28428 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-cm95-9q8x-72h6.