Ulearn a5a7ca20de859051ea0470542844980a66dfc05d - RCE
9.1
Critical
Discovered by
Offensive Team, Fluid Attacks
Summary
Full name
Ulearn a5a7ca20de859051ea0470542844980a66dfc05d - RCE
Code name
State
Public
Release date
Apr 10, 2023
Affected product
Ulearn
Affected version(s)
a5a7ca20de859051ea0470542844980a66dfc05d
Vulnerability name
Insecure file upload
Vulnerability type
Remotely exploitable
Yes
CVSS v3.1 vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v3.1 base score
9.1
Exploit available
No
CVE ID(s)
Description
Ulearn version a5a7ca20de859051ea0470542844980a66dfc05d allows an attacker with administrator permissions to obtain remote code execution on the server through the image upload functionality. This occurs because the application does not validate that the uploaded image is actually an image.
Vulnerability
This vulnerability This occurs because the application does not validate that the uploaded image is actually an image.
Evidence of exploitation
To exploit this vulnerability, we only need to send the following malicious PHP code to the server.
Our security policy
We have reserved the ID CVE-2023-0670 to refer to this issue from now on. Disclosure policy
System Information
Version: Ulearn a5a7ca20de859051ea0470542844980a66dfc05d
Operating System: GNU/Linux
Mitigation
There is currently no patch available for this vulnerability.
References
Vendor page https://github.com/ulearnpro/ulearn/
Timeline
Vulnerability discovered
Feb 3, 2023
Vendor contacted
Feb 3, 2023
Vendor replied
Feb 3, 2023
Public disclosure
Apr 10, 2023
