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Date: Tue, 22 Mar 2022 13:03:54 +0100 From: Egidio Romano <research@...mainsecurity.com> To: fulldisclosure@...lists.org, submissions@...ketstormsecurity.com Subject: [FD] [KIS-2022-04] ImpressCMS <= 1.4.3 (findusers.php) SQL Injection Vulnerability --------------------------------------------------------------- ImpressCMS <= 1.4.3 (findusers.php) SQL Injection Vulnerability --------------------------------------------------------------- [-] Software Link: https://www.impresscms.org [-] Affected Versions: Version 1.4.3 and prior versions. [-] Vulnerability Description: The vulnerability is located in the /include/findusers.php script: 281. $total = $user_handler->getUserCountByGroupLink(@$_POST["groups"], $criteria); 282. 283. $validsort = array("uname", "email", "last_login", "user_regdate", "posts"); 284. $sort = (!in_array($_POST['user_sort'], $validsort)) ? "uname" : $_POST['user_sort']; 285. $order = "ASC"; 286. if (isset($_POST['user_order']) && $_POST['user_order'] == "DESC") { 287. $order = "DESC"; 288. } 289. 290. $criteria->setSort($sort); 291. $criteria->setOrder($order); 292. $criteria->setLimit($limit); 293. $criteria->setStart($start); 294. $foundusers = $user_handler->getUsersByGroupLink(@$_POST["groups"], $criteria, TRUE); User input passed through the "groups" POST parameter is not properly sanitized before being passed to the icms_member_Handler::getUserCountByGroupLink() and icms_member_Handler::getUsersByGroupLink() methods at lines 281 and 294. These methods use the first argument to construct a SQL query without proper validation, and this can be exploited by remote attackers to e.g. read sensitive data from the "users" database table through boolean-based SQL Injection attacks. The application allows for stacked SQL queries, as such this vulnerability could be exploited to e.g. create a new admin user and execute arbitrary PHP code. [-] Solution: Upgrade to version 1.4.4 or later. [-] Disclosure Timeline: [19/01/2021] - Vendor notified through HackerOne [29/01/2021] - Vulnerability acknowledged by the vendor [03/02/2021] - CVE number assigned [06/02/2022] - Version 1.4.3 released, vulnerability not correctly fixed [11/02/2022] - Vendor was informed about the ineffective fix [09/03/2022] - Version 1.4.4 released [22/03/2022] - Public disclosure [-] CVE Reference: The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2021-26599 to this vulnerability. [-] Credits: Vulnerability discovered by Egidio Romano. [-] Other References: https://hackerone.com/reports/1081145 [-] Original Advisory: http://karmainsecurity.com/KIS-2022-04 _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/
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