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WordPress iMember360is 3.9.001 XSS / Disclosure / Code Execution
------------ BACKGROUND ------------ "iMember360is a WordPress plugin that will turn a normal WordPress site into a full featured membership site. It includes all the protection controls you can imagine, yet driven by Infusionsoft's second-to-none CRM and e-commerce engine." -- http://imember360.com/ This plugin is hailed by some as being one of the power tools of the "big boys" of internet marketing, and according to the author it is installed on some 5,000 sites worldwide. Unfortunately, the author is openly hostile at the suggestion that there are problems with his code: attempts to alert him to the problems with the plugin resulted in a flurry of insults, accusations, and nasty-grams to me and others working on the project. He accused me of telling "blatant lies" and fabricating screenshots of the vulnerabilities (!!!). So here we are in the disclosure list. Developers would do well to error on the side of humility here and remember that the only acceptable response to a bug report you disagree with is "cannot reproduce," and it my sincere hope that the author gets therapy, a security audit, or both: his customers deserve more than the incompetence and aggression. ------------------- VULNERABILITIES ------------------- * Disclosure of database credentials * XSS Vulnerabilities * Arbitrary user deletion * Arbitrary code execution ----------------- AFFECTED VERSIONS ----------------- v3.8.012 thru v3.9.001 ----------------------- PROOF OF CONCEPT ----------------------- Dictionary based URL scanning of a site where the plugin is installed revealed numerous $_GET parameters that triggered special functionality that rarely seemed properly checked for permissions. The specific vulnerabilities include: DATABASE CREDENTIALS DISCLOSED ?i4w_dbinfo= Prior to version 3.9.001, setting this parameter on a site where the plugin is installed would trigger the full database credentials to be printed, including database name, user, password, and encoding. After version 3.9.001, this exploit requires that the user request an admin URL (e.g. as a registered subscriber). XSS VULNERABILITIES ?decrypt=<any XSS code here> ?encrypt=<any XSS code here> If set, both of these parameters will simply print what follows verbatim onto the page and exit: nothing else is printed. A phishing attack is quite simple here because the attackers do not have to camouflage anything: the remote Javascript file can simply generate the *entire* page. Just a reminder that some hosts filter the $_GET parameters (e.g. escaping quotes) and not all browsers interpret malformed tags correctly, but this these parameters are vulnerable to XSS attacks. On some setups with caching, this may result in a persistent XSS attack when subsequent page views serve up the compromised page. DELETE ARBITRARY USERS ?i4w_clearuser=&Email=<user_login_name> If these 2 parameters are defined, the named user will be *deleted* from the Wordpress database (with one catch). The i4w_clearuser parameter must match the API key used by the plugin, but if the plugin has not yet had the license activated, then the API key is null, so the attack succeeds. Wordpress login names are printed in comments or can be guessed (e.g. the ubiquitous "admin"). ARBITRARY CODE EXECUTION ?i4w_trace=; <put any code here> # The i4w_trace parameter passes unescaped values to the system shell when the page is being requested by an admin (the user must be authenticated as an administrator for this to work). Put any code you want in between the ";" and the "#". This makes for a dangerous phishing attack if you can convince an admin to click on a prepared link. # 0day.today [2024-12-25] #