X-Forwarded-For 403-forbidden Bypass Fuzz & Scanner
Detect 403 forbidden endpoint bypass behind Nginx/Apache proxy & load balancers, based on X-Forwarded-For header.
Short Info
Level
Medium
Single Scan
Single Scan
Can be used by
Asset Owner
Estimated Time
1 minute
Time Interval
3 day
Scan only one
Domain, Ipv4
Toolbox
-
The X-Forwarded-For (XFF) HTTP header field is a common method for identifying the originating IP address of a client connecting to a web server through an HTTP proxy or load balancer.
In cases where the recording mechanisms of web servers that can log HTTP headers fail to process the X-Forwarded-For header sent by the user, buffer overflow, command execution with web server rights, corruption of the file or format by entering corrupted data into the log files, etc. may be affected by security problems.