Detect CVE-2025-58048: Paymenter Remote Code Execution via Unrestricted File Upload in Sumo Logic CSE
Detects exploitation of CVE-2025-58048, a critical unrestricted file upload vulnerability (CWE-434) in Paymenter versions prior to 1.2.11. Attackers can upload malicious files (e.g., PHP webshells) through publicly accessible upload endpoints, achieving remote code execution on the server. CVSS 9.9 with public PoC available.
MITRE ATT&CK
- Tactic
- Initial Access Execution Persistence Impact
Sumo Detection Query
_sourceCategory=webserver/access OR _sourceCategory=nginx/access OR _sourceCategory=apache/access
| parse regex "(?<method>GET|POST|PUT|DELETE|PATCH) (?<uri_path>[^\s]+)" nodrop
| parse regex "\s(?<status_code>\d{3})\s" nodrop
| where method = "POST"
| where uri_path matches "*/upload*" or uri_path matches "*/files*" or uri_path matches "*/storage/app/public*" or uri_path matches "*/public/uploads*"
| parse regex field=uri_path "\.(?<file_ext>[^./?]+)(?:[?#].*)?$" nodrop
| where toLowerCase(file_ext) in ("php","php3","php4","php5","phtml","phar","asp","aspx","jsp","sh","bash","py","pl","cgi")
| where status_code in ("200", "201", "204")
| timeslice 5m
| stats count as upload_count, values(uri_path) as upload_paths, values(status_code) as status_codes by _timeslice, _sourceHost, src_ip, file_ext
| sort by _timeslice desc
| fields _timeslice, src_ip, _sourceHost, file_ext, upload_count, upload_paths, status_codesSumo Logic query identifying successful POST uploads of executable file types to Paymenter storage paths. Groups by time window and source IP to surface exploitation patterns.
Data Sources
Required Tables
False Positives & Tuning
- Paymenter administrators legitimately uploading PHP customization files or extensions
- Automated backup processes restoring PHP files to web directories
- Development workflow tools that deploy PHP patches through upload interfaces
- Internal security tests or penetration testing activities against the application
Other platforms for CVE-2025-58048
Testing Methodology
Validate this detection against 3 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.
- Test 1Upload PHP Webshell to Paymenter Public Storage
Expected signal: Web server logs showing POST to /upload with multipart/form-data containing .php file; file creation event in storage/app/public directory; HTTP 200/201 response code
- Test 2Execute Commands via Uploaded Webshell
Expected signal: GET requests to storage/app/public/*.php path; PHP process spawning id, uname, whoami child processes; outbound network connection from PHP/web server process to attacker IP
- Test 3Bypass MIME Type Restriction via Content-Type Spoofing
Expected signal: Web server logs showing POST uploads with mismatched Content-Type and file extension; file creation events with double extensions or PHP extensions in upload directories; magic byte mismatch in uploaded files
References (5)
- https://github.com/Paymenter/Paymenter/security/advisories/GHSA-5pm9-r2m8-rcmj
- https://nvd.nist.gov/vuln/detail/CVE-2025-58048
- https://github.com/Paymenter/Paymenter/commit/87c3db42282ada1e3cda54b9a01f846926c0669b
- https://github.com/Paymenter/Paymenter/releases/tag/v1.2.11
- https://github.com/advisories/GHSA-5pm9-r2m8-rcmj
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