Unauthenticated service interruption via client-secure renegotiation
Published Jun 13, 2023 · Updated Oct 23, 2024
Denial of service in Fortinet FortiNAC allows remote attackers to interrupt affected appliances via client-secure renegotiation. Fortinet identifies client-secure renegotiation as the trigger but has not disclosed the listening service or underlying resource-control failure. No authentication or user interaction is required, and successful exploitation interrupts appliance availability without reported data exposure or modification.
Summary
What happened
Denial of service in Fortinet FortiNAC allows remote attackers to interrupt affected appliances via client-secure renegotiation. Fortinet identifies client-secure renegotiation as the trigger but has not disclosed the listening service or underlying resource-control failure. No authentication or user interaction is required, and successful exploitation interrupts appliance availability without reported data exposure or modification.
The record
- CVE
- CVE-2023-22633
- Published
- Jun 13, 2023
- Updated
- Oct 23, 2024
- Vendor
- Fortinet
- Product
- FortiNAC
- Classifications
- CWE-264, T1499.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 13, 2023CVE publishedPublication date reported by the CVE source.
- Oct 23, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7.2.0
- Affected versionversion=8.7.0 <=8.7.6
- Affected versionversion=8.8.0 <=8.8.11
- Affected versionversion=9.1.0 <=9.1.8
- Affected versionversion=9.2.0 <=9.2.6
- Affected versionversion=9.4.0 <=9.4.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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