PT-2021-3817 · Fortinet · Fortimail

Published 2021-07-02 · Updated 2022-07-12 · CVE-2021-26100

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions FortiMail versions prior to 7.0.0

Description The issue is related to a missing cryptographic step in the Identity-Based Encryption service of FortiMail, which may allow an unauthenticated attacker who intercepts encrypted messages to manipulate them, making tampering and recovery of plaintexts possible. This could enable a remote attacker to gain unauthorized access to protected information.

Recommendations For versions prior to 7.0.0, update to version 7.0.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the Identity-Based Encryption service until a patch is available.

Fix

Improper Verification of Cryptographic Signature

Missing Encryption of Sensitive Data

Weakness Enumeration

CWE-325

CWE-347

CWE-311

Related Identifiers

BDU:2021-04127

CVE-2021-26100

Affected Products

Fortimail

References · 8

• https://osv.dev/vulnerability/CVE-2021-26100 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-04127 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-26100 · Security Note
• https://fortiguard.com/advisory/FG-IR-21-003 · Vendor Advisory
• https://fortiguard.com/psirt/FG-IR-21-003 · Note
• https://t.me/cvenotify/17394 · Telegram Post
• https://t.me/cvenotify/17454 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021071352 · Note