ActiveWeb Contentserver CMS Editor Permission Settings Problem

2007.07.21
Risk: Medium
Local: Yes
Remote: No
CWE: CWE-Other


CVSS Base Score: 4/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8/10
Exploit range: Remote
Attack complexity: Low
Authentication: Single time
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

Advisory: ActiveWeb Contentserver CMS Editor Permission Settings Problem RedTeam Pentesting discovered a problem with the permission settings in the management interface of the activeWeb contentserver CMS during a penetration test. The ability of an editor to create and edit documents can be restricted to specific folders. RedTeam Pentesting was still able to create arbitrary documents in all directories, regardless of the restrictions set on the editor account. Details ======= Product: activeWeb contentserver Affected Versions: <= 5.6.2929 Fixed Versions: 5.6.2964 Vulnerability Type: Permission Problem Security-Risk: medium 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-2007-007.php Advisory-Status: public CVE: CVE-2007-3018 CVE-URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3018 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 ============ When creating new editor accounts, the administrator has the ability to impose restrictions on it. The editor can be restricted to be only able to create and modify files in certain folders. All other folders should be inaccessible to him. The vulnerability lies in the fact that an editor with such a restricted account is still able to create files in arbitrary locations. He will not be able to edit already existing pages though. Fix === The vulnerability is fixed in release 5.6.2964. Security Risk ============= Editors may create arbitrary files in locations they are not supposed to modify. This can include the usage of Javascript for malicious purposes or other ways of exploiting users. They cannot modify existing files, and the creation of new files is easily traceable and revertable through the system. Additionally, editors are normally considered trustworthy. The risk is therefore labeled as medium. History ======= 2007-05-23 Problem found during a penetration test 2007-05-30 Vendor notified by customer 2007-06-01 Vendor called back to discuss next steps and to announce investigation 2007-06-29 Vendor confirmed the vulnerability 2007-06-30 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. 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 Geschftsfhrer: Patrick Hof, Jens Liebchen, Claus R. F. Overbeck -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) iQEVAwUARpcu+NG/HXWsgFSuAQpPZwgAs6YQ5Nt9FpTRec8hH/6nrZqpALft2qIs 88UYXKUg1H5Sn9GCsDvFrEaEaFYpweTvIZ6EiSyoc/5FpqvEkpwionE7npqOc0A7 tEVaXD11Zz/ExE3vqk725G/T6jCyYuYciAb04t8jZf5jTAwLp8meS9a03NSn5g51 TNGuF83U8Ezwcz0A9nJN16aZ6rR0BnCNe1dTOzYBrPOUGT8Zj3O6yWfRYFTNvsL5 ZVbWQ40DinJBKBlpd4Qw8Ow4RJegrZvI6uVArzZIma0WsxZhzerLs0aOjNf+hpJ2 ZAzep13xGz6dzwZuxGdGUtloS582krSE+pp3VOn77rs9cEPYGS62nQ== =F8VO -----END PGP SIGNATURE-----


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