CVE-2021-24020: A missing cryptographic step in the implementation of the hash digest algorithm in FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an…

PriorityP356critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

0.62%

45.3th percentile

A missing cryptographic step in the implementation of the hash digest algorithm in FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to tamper with signed URLs by appending further data which allows bypass of signature verification.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
fortinet	fortimail	—	—
fortinet	fortimail	6.2.0 – 6.2.7	—
fortinet	fortimail	>= 6.4.0 < 6.4.5	6.4.5
fortinet	fortinet_fortimail	—	—

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

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