rt-sa-2007-004.txt
Posted on 14 July 2007
Advisory: ActiveWeb Contentserver CMS SQL Injection Management Interface RedTeam Pentesting discovered an SQL Injection in the picture_real_edit.asp script of the activeWeb contentserver CMS during a penetration test. An editor with the permission to edit pictures can exploit this by injecting arbitrary commands into the "id" variable used to fetch an image from the database. Details ======= Product: activeWeb contentserver Affected Versions: <= 5.6.2929 Fixed Versions: 5.6.2964 Vulnerability Type: SQL-Injection Security-Risk: high Vendor-URL: http://www.active-web.de/aw/home/Produkte/~gf/contentserver/ Vendor-Status: informed, fixed version released Advisory-URL: http://www.redteam-pentesting.de/advisories/rt-sa-2007-004.php Advisory-Status: public CVE: CVE-2007-3013 CVE-URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3013 Introduction ============ contentserver is the comprehensive, scalable Content Management System for professional requirements. It combines editorial system, website management and development platform for web applications in one package. (translation of the description on the vendor's homepage) More Details ============ By accessing the URL https://www.example.com/admin/picture/picture_real_edit.asp?id= an editor can edit images. The images are stored in the SQL database and referenced by the variable "id". This variable is not filtered, which leads to an SQL Injection. The query which is executed is SELECT Bezeichnung,ImageKommentar,KatalogID FROM RealobjectSmall WHERE ID = '$id' By injecting commands into the "id" parameter, arbitrary SQL statements can be executed. The structure of the query is shown on an error page if there is an error in it (e.g., by setting id to a single tick "'"), making it easy for an attacker to check the exact syntax he needs to exploit the vulnerability. The return values of the query will be shown in the form fields of the page. Proof of Concept ================ The following request shows the version of the SQL server and the operating system in the "Bezeichnung" form field, using an SQL UNION: https://www.example.com/admin/picture/picture_real_edit.asp ?id='%20union%20select%20@@version%20,@@microsoftversion,@@version-- Workaround ========== A possible workaround would be to use a filtering application set up in front of the real webserver, mitigating the risk of being exploited. Fix === The vulnerability is fixed in release 5.6.2964. Security Risk ============= The risk of this vulnerability is high. Any editor with the permissions to edit an image can inject SQL Code, completely compromising the database. History ======= 2007-05-23 Problem found during a penetration test 2007-05-30 Vendor notified by customer 2007-06-01 Vendor called back and confirmed the vulnerability 2007-06-18 CVE number assigned 2007-07-11 Vendor released fixed version 2007-07-13 Advisory released The vendor was very cooperative. There was always a competent contact person available who answered any questions. They did an additional code audit after verifying the vulnerability and fixed similar problems immediately. RedTeam Pentesting GmbH ======================= RedTeam Pentesting is offering individual penetration tests, short pentests, performed by a team of specialised IT-security experts. Hereby, security weaknesses in company networks or products are uncovered and can be fixed immediately. As there are only few experts in this field, RedTeam Pentesting wants to share its knowledge and enhance the public knowledge with research in security related areas. The results are made available as public security advisories. More information about RedTeam Pentesting can be found at http://www.redteam-pentesting.de. -- RedTeam Pentesting GmbH Tel.: +49 241 963-1300 Dennewartstr. 25-27 Fax : +49 241 963-1304 52068 Aachen http://www.redteam-pentesting.de/ Germany Registergericht: Aachen HRB 14004 Geschäftsführer: Patrick Hof, Jens Liebchen, Claus R. F. Overbeck
