Multiple vulnerabilities in the authentication mechanism of confd

Summary

Multiple vulnerabilities in the authentication mechanism of FortiWeb's confd, including an instance of concurrent execution using shared resource with improper synchronization [CWE-362] and one of authentication bypass by capture-replay [CWE-294], may allow a remote unauthenticated attacker to circumvent the authentication process and authenticate as a legitimate cluster peer.

Affected Products

FortiWeb versions 6.4.1 and below.
FortiWeb versions 6.3.15 and below.
FortiWeb versions 6.2.6 and below.
FortiWeb versions 6.1.2 and below.
FortiWeb versions 6.3.15 and below.
FortiWeb versions 6.0.7 and below.

FortiADC versions 7.0.2 and below.
FortiADC versions 6.2.4 and below.
FortiADC 6.1, 6.0, 5.4, 5.3, 5.2,5.1,5.0 all versions

Solutions

Please upgrade to FortiWeb 7.0.0 or above.
Please upgrade to FortiWeb 6.4.2 or above.
Please upgrade to FortiWeb 6.3.16 or above.
Please upgrade to FortiADC version 7.1.0 or above
Please upgrade to FortiADC version 7.0.3 or above
Please upgrade to FortiADC version 6.2.5 or above

Acknowledgement

Internally discovered and reported by Giuseppe Cocomazzi of Fortinet Product Security team.

Timeline

2021-12-07: Initial publication