Vulnerability identifier: #VU54787
Vulnerability risk: High
Exploitation vector: Network
Exploit availability: No
Vendor: Fortinet, Inc
The vulnerability allows a remote attacker to bypass signature verification.
The vulnerability exists due to a missing cryptographic step in the implementation of the hash digest algorithm in FortiMail. A remote non-authenticated attacker can tamper with signed URLs by appending further data which allows bypass of signature verification.
Install updates from vendor's website.
Vulnerable software versions
Fortinet FortiMail: 6.2.0 - 6.4.4
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.