Unauthenticated code execution via unrestricted file upload
Published Mar 31, 2022 · Updated Aug 4, 2024
Unrestricted file upload in Simple Client Management System 1.0 allows remote attackers to execute code through create.php. The endpoint accepts PHP files in the uimg, proof1, and proof2 multipart fields, stores them under img, and leaves them web-accessible. The published exploit bypasses the admin login with SQL injection, creates a user, uploads a PHP command shell, and then runs arbitrary commands in the web server context.
Summary
What happened
Unrestricted file upload in Simple Client Management System 1.0 allows remote attackers to execute code through create.php. The endpoint accepts PHP files in the uimg, proof1, and proof2 multipart fields, stores them under img, and leaves them web-accessible. The published exploit bypasses the admin login with SQL injection, creates a user, uploads a PHP command shell, and then runs arbitrary commands in the web server context.
The record
- CVE
- CVE-2021-43484
- Published
- Mar 31, 2022
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-89, T1505.003
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 31, 2022CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Simple Client Management System 1.0 Remote Code Execution exploitfunctional · demonstrated
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Technologies
Your stack
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Your stack
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