SEC Consult Vulnerability Lab Security Advisory < 20130404-0 > ======================================================================= title: Multiple Vulnerabilities product: Censornet Professional v4 (2.1.7) vulnerable version: 2.1.7 fixed version: impact: high homepage: http://www.censornet.com/ found: 2013-02-06 by: M. Heinzl SEC Consult Vulnerability Lab https://www.sec-consult.com ======================================================================= Vendor description: ------------------- CensorNet Ltd is an established player in the Internet Security market with a focus on web content and e-mail content management. With a broad portfolio of products to suit customers, channel partners and service providers, CensorNet strives to provide flexible and feature-packed products that are affordable to all types of organization. CensorNet products allow stakeholders to quickly and easily implement an Acceptable Usage Policy for Internet access, helping them to improve productivity, increase security, comply with regulations and reduce administrative burden. CensorNet Ltd is headquartered in the United Kingdom and sells globally via an established channel partner network. Source: http://www.censornet.com/en/about Vulnerability overview/description: ----------------------------------- Censornet Professional v4 suffers from multiple Cross-Site Scripting and SQL Injection vulnerabilities which can be exploited by an authenticated attacker. Proof of concepts: ----------------- Detailed proof of concept URLs and exploits have been removed from this advisory as no vendor patch is available. 1) Reflective Cross-Site Scripting Vulnerability When doing a "Site Lookup" through "Filters > Content classified (Site Lookup)", JavaScript code can be inserted into the parameter "lookup_url": [...] 2) Multiple Stored Cross-Site Scripting Vulnerabilities Multiple parameters of the Censornet Professional v4 appliaction are prone to stored Cross-Site Scripting attacks. Amongst others, the configuration of the "Parent Proxy Settings" ("System > Configuration > Parent Proxy Settings"), contain many vulnerable parameters: - parentproxyaddress - parentproxyport - parentproxyusername - parentproxypassword - parentproxyaddressssl - parentproxyportssl - parentproxyusernamessl - parentproxypasswordssl Request: [...] The sample applies to the parameters of "System Alerts" ("Configuration > System Alerts"): - load - ram - disk Request: [...] 3) Multiple SQL Injection Vulnerabilities Multiple SQL injection vulnerabilities exist within the Censornet Professional v4 product. Malicious authenticated users can exploit these flaws to manipulate the queries sent to the PostgreSQL database. When creating a new report ("Reports > New Custom Report"), the following parameters are vulnerable: - report_items - report_name - date_range - username_comparison - username_specificvalue - usergroups_comparison - usergroups_specificvalue - workstation_comparison - workstation_specificvalue - workstationgroups_comparison - workstationgroups_specificvalue - url_comparison - url_specificvalue - policy_comparison - policy_specificvalue - ... "Reports > View Custom Report": - predicate - report_name - table - ... "Reports > Manage Custom Reports": - filter - ... "Filters > Custom URL Module > Categories": - newcategory - ... "Policies > New Policy": - policy_name - policy_description - colorpicker - access_level - conflicts - block_nocat - time_quota - ... "Objects > New User": - id - ... "Objects > New Computer": - new_workstation_name - new_workstation_addr - group - ... "Objects > New Administrator": - module_items - new_user_name - ... "Objects > New Manager": - group_items - new_manager_email - new_manager_period - ... Vulnerable / tested versions: ----------------------------- Censornet Professional v4 (2.1.7) Vendor contact timeline: ------------------------ 2013-02-12: Contacting vendor through info@censornet.com 2013-02-20: Contacting vendor again through info@censornet.com, sales@censornet.com, support@censornet.com and support formular (http://www.censornet.com/en/support/ticket) since no reply was received so far 2013-02-27: Informing vendor about the release of the advisory on 2013-04-03. 2013-04-04: No further response from vendor. Advisory published according to the SEC Consult's responsible disclosure policy. Solution: --------- None Workaround: ----------- Restrict access to trusted users only. Advisory URL: ------------- https://www.sec-consult.com/en/Vulnerability-Lab/Advisories.htm ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ SEC Consult Unternehmensberatung GmbH Office Vienna Mooslackengasse 17 A-1190 Vienna Austria Tel.: +43 / 1 / 890 30 43 - 0 Fax.: +43 / 1 / 890 30 43 - 25 Mail: research at sec-consult dot com https://www.sec-consult.com EOF M. Heinzl / @2013