CVE-2023-0943

published 2023-02-21

CVE-2023-0943: A vulnerability, which was classified as problematic, has been found in SourceCodester Best POS Management System 1.0. This issue affects the function…

Priority P2 61 high 8.8 CVSS 3.1

AV N AC L PR L UI N S U C H I H A H

EXPLOIT

A vulnerability, which was classified as problematic, has been found in SourceCodester Best POS Management System 1.0. This issue affects the function save_settings of the file index.php?page=site_settings of the component Image Handler. The manipulation of the argument img with the input ../../shell.php leads to unrestricted upload. The attack may be initiated remotely. The associated identifier of this vulnerability is VDB-221591.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
best_pos_management_system_project	best_pos_management_system	—	—
sourcecodester	best_pos_management_system	—	—

Detection & IOCs extracted from sources · hover to see the quote

url http://localhost/kruxton/index.php?page=site_settings↗

url http://localhost/kruxton/assets/uploads/↗

url http://localhost/kruxton/assets/uploads/1676627880_shell.png.php?cmd=whoami↗

path /kruxton/assets/uploads/↗

filename shell.php↗

filename 1676627880_shell.png.php↗

path ../../shell.php↗

path index.php?page=site_settings↗

• → Detect path traversal in the 'img' argument targeting the site_settings page; payloads use '../../shell.php' to escape the upload directory. ↗
• → Monitor POST requests to 'index.php?page=site_settings' for file uploads with double-extension filenames (e.g., *.png.php) or .php extensions in the img parameter. ↗
• → Alert on GET requests to '/kruxton/assets/uploads/' containing '.php' files, especially those with a '?cmd=' query parameter indicating webshell command execution. ↗
• → Uploaded webshell filenames follow the pattern: <unix_timestamp>_shell.png.php — monitor the uploads directory for files matching this naming convention. ↗

• · The exploit paths (e.g., /kruxton/) are based on the default installation directory from the vendor's downloadable ZIP. Deployments in non-default directories will have different base paths. ↗
• · The vulnerability is exploitable by an authenticated admin user; unauthenticated exploitation requires prior credential compromise. ↗

CVSS provenance

nvd v3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 5.8 MEDIUM AV:N/AC:L/Au:M/C:P/I:P/A:P

CVEs like this are exactly what “Exploited This Week” covers.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-434