CVE-2018-9194 Weak cryptography in FortiOS

What is CVE-2018-9194?

CVE-2018-9194 is a medium-severity vulnerability in Fortinet Fortios, published on 5 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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 VIP SSL feature when CPx being used.

Weakness: CWE-203

Which versions are affected by CVE-2018-9194?

It affects 1 product.

Products include Fortinet Fortios.

How do I fix CVE-2018-9194?

No fix has been published for CVE-2018-9194 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-9194 being exploited?

There is no known exploitation of CVE-2018-9194 in the wild and no public exploit code.

Other vulnerabilities in Fortinet Fortios

• CVE-2024-23113 Fortinet Multiple Products Format String Exploited Critical 9.8
• CVE-2022-40684 Fortinet Multiple Products Authentication Bypass Exploited Critical 9.8
• CVE-2024-55591 Fortinet FortiOS and FortiProxy Authentication Bypass Exploited Critical 9.6
• CVE-2024-21762 Fortinet FortiOS Out-of-Bound Write Exploited Critical 9.6
• CVE-2022-42475 Fortinet FortiOS Heap-Based Buffer Overflow Exploited Critical 9.3

All Fortinet Fortios vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-vpcr-5m3v-q2cf.