#VU54775 Use of cryptographically weak pseudo-random number generator (PRNG) in FortiMail - CVE-2021-26091 

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Main Vulnerability Database Vulnerabilities #VU54775

#VU54775 Use of cryptographically weak pseudo-random number generator (PRNG) in FortiMail - CVE-2021-26091

Published: July 13, 2021


Vulnerability identifier: #VU54775
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-26091
CWE-ID: CWE-338
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
FortiMail
Software vendor:
Fortinet, Inc

Description

The vulnerability allows a remote attacker to reset credentials of other users.

The vulnerability exists due to usage of weak pseudo-random number generator in the authenticator of FortiMail Identity Based Encryption service. A remote attacker can infer parts of users authentication tokens and reset their credentials.


Remediation

Install updates from vendor's website.

External links