CVE entry · CVE-2024-21762
CVE-2024-21762: Fortinet FortiOS Out-of-Bound Write Vulnerability
Fortinet FortiOS contains an out-of-bound write vulnerability that allows a remote unauthenticated attacker to execute code or commands via specially crafted HTTP requests.
- Actively exploited: added to CISA’s KEV catalog on February 9, 2024.
- Used by ransomware, according to CISA.
- Remediation deadline for US federal agencies: February 16, 2024.
- CERT-FR alert CERTFR-2024-ALE-004 of February 9, 2024.
Description from CISA’s KEV catalog.
CERT-FR alerts and notices
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CERTFR-2024-ALE-004[MàJ] Vulnérabilité dans Fortinet FortiOS (09 février 2024)
What to do
- Check whether your estate includes Fortinet FortiOS, including internet-facing devices.
- Apply the vendor’s patch or mitigations (references below). Failing that, isolate the product or stop using it, as CISA requires of US federal agencies.
- An exploited vulnerability has often been used before it was fixed: look for signs of compromise, especially on internet-facing devices.
References
- Vendor advisory or reference cited by CISA (fortiguard.fortinet.com)
- NVD entry (NIST)
- CISA KEV catalog
Other Fortinet vulnerabilities
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Fortinet Multiple Products Path Traversal Vulnerability
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Fortinet FortiMail Path Traversal Vulnerability
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Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability
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Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability
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Fortinet FortiSandbox OS Command Injection Vulnerability
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Fortinet FortiSandbox OS Command Injection Vulnerability