Hard-coded SSH key in Fortinet FortiSIEM



Published: 2020-01-08 | Updated: 2020-01-16
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-17659
CWE-ID CWE-321
Exploitation vector Local network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
Subscribe 		FortiSIEM
Server applications / DLP, anti-spam, sniffers

Vendor Fortinet, Inc

Security Bulletin

This security bulletin contains information about 1 vulnerabilities.

Updated: 16.01.2020

Added information about patch availability, assigned CVE-ID, added link to vendor's advisory.

1) Use of Hard-coded Cryptographic Key

EUVDB-ID: #VU24132

Risk: Medium

CVSSv3.1: 6.2 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:U/RC:C]

CVE-ID: CVE-2019-17659

CWE-ID: CWE-321 - Use of Hard-coded Cryptographic Key

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to the system.

The vulnerability exists due to usage of a hard-coded ssh key for the "tunneluser" account, present in "/home/tunneluser/.ssh/authorized_keys". A remote attacker can use the ssh key to connect to FortiSIEM via SSH service on port 1999/TCP.


Mitigation

Install update from vendor's website.

Vulnerable software versions

FortiSIEM: 5.2.0 - 5.2.6

External links

http://packetstormsecurity.com/files/download/155868/fortisiem-hardcoded.txt
http://fortiguard.com/psirt/FG-IR-19-296


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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