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=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2024.2171 FortiOS - Web server ETag exposure 10 April 2024 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: FortiOS Publisher: Fortinet Operating System: Fortinet Resolution: Patch/Upgrade CVE Names: CVE-2024-23662 Original Bulletin: https://fortiguard.fortinet.com/psirt/FG-IR-23-224 Comment: CVSS (Max): 5.0 CVE-2024-23662 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:X) CVSS Source: Fortinet Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:X - --------------------------BEGIN INCLUDED TEXT-------------------- FortiOS - Web server ETag exposure IR Number : FG-IR-23-224 Date : Apr 9, 2024 Severity : Medium CVSSv3 Score : 5 Impact : Information disclosure CVE ID : CVE-2024-23662 Summary An exposure of sensitive information to an unauthorized actor vulnerability [CWE-200] in FortiOS may allow an unauthenticated attacker to fingerprint the device version via HTTP requests. Version | Affected | Solution FortiOS 7.4 | 7.4.0 through 7.4.1 | Upgrade to 7.4.2 or above FortiOS 7.2 | 7.2.0 through 7.2.5 | Upgrade to 7.2.6 or above FortiOS 7.0 | 7.0 all versions | Migrate to a fixed release FortiOS 6.4 | 6.4 all versions | Migrate to a fixed release Follow the recommended upgrade path using our tool at: https:// docs.fortinet.com/upgrade-tool Acknowledgement Fortinet is pleased to thank security researcher Andreas Korpas at Institute for Energy Technology SOC for discovering and reporting this vulnerability under responsible disclosure. Timeline 2024-04-09: Initial publication - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. ===========================================================================