CVE-2021-3278

published 2021-01-26

CVE-2021-3278: Local Service Search Engine Management System 1.0 has a vulnerability through authentication bypass using SQL injection . Using this vulnerability, an attacker…

Priority P2 72 critical 9.8 CVSS 3.1

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

EXPLOIT

Local Service Search Engine Management System 1.0 has a vulnerability through authentication bypass using SQL injection . Using this vulnerability, an attacker can bypass the login page.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
local_services_search_engine_management_system_project	local_services_search_engine_management_system	—	—

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

url /lssems/admin/ajax.php?action=login↗

path /lssems/admin/login.php↗

command Aditya' or 1=1#↗

other username=Aditya'+or+1%3D1%23&password=Aditya'+or+1%3D1%23↗

• → Detect POST requests to /lssems/admin/ajax.php with action=login parameter containing SQL injection patterns (e.g., OR 1=1# or URL-encoded equivalents %3D1%23) in username or password fields. ↗
• → Look for the X-Requested-With: XMLHttpRequest header combined with Content-Type: application/x-www-form-urlencoded on the login endpoint, as the exploit uses an AJAX-based login bypass. ↗
• → Flag POST body payloads containing URL-encoded SQL injection strings targeting both username and password fields simultaneously, specifically the pattern '+or+1%3D1%23. ↗

• · The exploit was tested on a local/development environment (localhost:8080 with XAMPP); in production deployments the base path /lssems/ may differ, so detection rules should match on the relative path /admin/ajax.php?action=login rather than the full host-specific URL. ↗

CVSS provenance

nvd v3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 7.5 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P

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