HTTP response splitting vulnerability

Summary

An improper neutralization of CRLF sequences in HTTP headers ('HTTP Response Splitting') vulnerability In FortiManager and FortiAnalyzer GUI may allow an authenticated and remote attacker to perform an HTTP request splitting attack which gives attackers control of the remaining headers and body of the response.

Affected Products

FortiManager 7.0.0
FortiManager 6.4.6 and below.
FortiManager 6.2.8 and below.
FortiManager 6.0.x
FortiManager 5.6.x
FortiAnalyzer 7.0.0
FortiAnalyzer 6.4.6 and below.
FortiAnalyzer 6.2.8 and below.
FortiAnalyzer 6.0.x
FortiAnalyzer 5.6.x

Solutions

Please upgrade to FortiManager 7.0.1 or above.
Please upgrade to FortiManager 6.4.7 or above.
Please upgrade to FortiManager 6.2.9 or above.
Please upgrade to FortiAnalyzer 7.0.1 or above.
Please upgrade to FortiAnalyzer 6.4.7 or above.
Please upgrade to FortiAnalyzer 6.2.9 or above.

Acknowledgement

Fortinet is pleased to thank Clément Amic, Pierre Milioni and Adrien Peter from Synacktiv for reporting this vulnerability under responsible disclosure.

Timeline

2021-08-03: Initial publication