An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS version 7.0.0 through 7.0.16 and Forti
Affects FortiOS 7.0.0 through 7.0.16 and FortiProxy 7.0.0 through 7.0.19 and 7.2.0 through 7.2.12. No vendor severity is given, and the FortiOS fix is 7.0.17 or above.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
This vulnerability affects Fortinet's FortiOS and FortiProxy operating systems used in their network security appliances. An remote attacker could exploit it by sending specially crafted requests to a websocket component, gaining full administrator privileges on the affected device.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS version 7.0.0 through 7.0.16 and FortiProxy version 7.0.0 through 7.0.19 and 7.2.0 through 7.2.12 allows a remote attacker to gain super-admin privileges via crafted requests to Node.js websocket module.
Timeline
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CVE published
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- Fortinet FortiOS
From 7.0.0 · through 7.0.16
- Fortinet FortiProxy
From 7.2.0 · through 7.2.12; From 7.0.0 · through 7.0.19
References 1
fortiguard.fortinet.com
Questions about CVE-2024-55591
What does this mean?
Crafted requests to the Node.js websocket module, or crafted CSF proxy requests, can let a remote attacker gain super-admin privileges. The attacker could then create admin and local user accounts and log in to SSL VPN to reach the internal network.Source: fortiguard.fortinet.com
Am I affected, and how do I check?
FortiOS 7.0.0 through 7.0.16 is listed as affected, and so are FortiProxy 7.2.0 through 7.2.12 and FortiProxy 7.0.0 through 7.0.19. Compare the installed version against these ranges.Source: fortiguard.fortinet.com
What should I do about it?
Upgrade FortiOS to 7.0.17 or above. The checked facts do not give a fixed FortiProxy version.Source: fortiguard.fortinet.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2025-01-14, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data
What if there's no patch?
Disable the HTTP/HTTPS administrative interface, which is the listed workaround while no fix is installed.Source: fortiguard.fortinet.com