Experts released PoC exploit code for RCE in Fortinet SIEM


Experts released PoC exploit code for RCE in Fortinet SIEM

Pierluigi Paganini
Experts released PoC exploit code for RCE in Fortinet SIEM May 28, 2024

Experts released PoC exploit code for RCE in Fortinet SIEM

Researchers released a proof-of-concept (PoC) exploit for remote code execution flaw CVE-2024-23108 in Fortinet SIEM solution.

Security researchers at Horizon3’s Attack Team released a proof-of-concept (PoC) exploit for a remote code execution issue, tracked as CVE-2024-23108, in Fortinet’s SIEM solution. The PoC exploit allows executing commands as root on Internet-facing FortiSIEM appliances.

In February, cybersecurity vendor Fortinet warned of two critical vulnerabilities in FortiSIEM, tracked as CVE-2024-23108 and CVE-2024-23109 (CVSS score 10), which could lead to remote code execution.

“Multiple improper neutralization of special elements used in an OS Command vulnerability [CWE-78] in FortiSIEM supervisor may allow a remote unauthenticated attacker to execute unauthorized commands via crafted API requests.” reads the advisory published by Fortinet.

The affected products are:

  • FortiSIEM version 7.1.0 through 7.1.1
  • FortiSIEM version 7.0.0 through 7.0.2
  • FortiSIEM version 6.7.0 through 6.7.8
  • FortiSIEM version 6.6.0 through 6.6.3
  • FortiSIEM version 6.5.0 through 6.5.2
  • FortiSIEM version 6.4.0 through 6.4.2

The CERT-EU also published an advisory for the above vulnerabilities:

“In February 2024, Fortinet quietly updated a 2023 advisory, joining two critical flows to the list of OS Command vulnerabilities affecting its FortiSIEM product. If exploited, these vulnerabilities could allow a remote unauthenticated attacker to execute commands on the system.” reads the advisory published by CERT-EU. “Updating is recommended as soon as possible.”

This week, Horizon3’s Attack Team also published a technical analysis of the vulnerability.

“While the patches for the original PSIRT issue, FG-IR-23-130, attempted to escape user-controlled inputs at this layer by adding the wrapShellToken() utility, there exists a second order command injection when certain parameters to datastore.py are sent. There” reads the analysis.

The researchers noticed that the logs for the phMonitor service, located at /opt/phoenix/logs/phoenix.log, provide detailed records of received messages. Any exploitation attempt of CVE-2024-23108 will generate log entries indicating a failed command with “datastore.py nfs test.” These lines should be used as indicators of compromise to detect exploitation attempts.

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

Pierluigi Paganini

(SecurityAffairs – hacking, SIEM)







Source link