CVE-2018-9192

MEDIUM

FortiOS 5.4.6-5.4.9, 6.0.0-6.0.1 - Plaintext Recovery and Man-in-the-Middle Attack via RSA PKCS #1 v1.5 Encryption

Title source: llm

Description

A plaintext recovery of encrypted messages or a Man-in-the-middle (MiTM) attack on RSA PKCS #1 v1.5 encryption may be possible without knowledge of the server's private key. Fortinet FortiOS 5.4.6 to 5.4.9, 6.0.0 and 6.0.1 are vulnerable by such attack under SSL Deep Inspection feature when CPx being used.

References (3)

Core 3

Core References

Third Party Advisory x_refsource_misc

https://robotattack.org/

Vendor Advisory x_refsource_confirm

https://fortiguard.com/advisory/FG-IR-17-302

Third Party Advisory, US Government Resource third-party-advisory x_refsource_cert-vn

https://www.kb.cert.org/vuls/id/144389

Scores

CVSS v3 5.9

EPSS 0.0016

EPSS Percentile 37.1%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-203

Status published

Products (3)

fortinet/fortios 6.0.0

fortinet/fortios 6.0.1

fortinet/fortios 5.4.6 - 5.4.9

Published Sep 05, 2018

Tracked Since Feb 18, 2026