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AUSCERT External Security Bulletin Redistribution
ESB-2024.0849
FortiOS - Out-of-bound Write in sslvpnd
9 February 2024
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AusCERT Security Bulletin Summary
---------------------------------
Product: FortiOS
Publisher: Fortinet
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2024-21762
Original Bulletin:
https://fortiguard.fortinet.com/psirt/FG-IR-24-015
Comment: CVSS (Max): 9.6 CVE-2024-21762 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
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:H/I:H/A:H
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FortiOS - Out-of-bound Write in sslvpnd
IR Number : FG-IR-24-015
Date : Feb 8, 2024
Severity : Critical
CVSSv3 Score : 9.6
Impact : Execute unauthorized code or commands
CVE ID : CVE-2024-21762
Language : English
Portuguese
Summary
A out-of-bounds write vulnerability [CWE-787] in FortiOS may allow a remote
unauthenticated attacker to execute arbitrary code or command via specially
crafted HTTP requests.
Version | Affected | Solution
FortiOS 7.6 | Not affected | Not Applicable
FortiOS 7.4 | 7.4.0 through 7.4.2 | Upgrade to 7.4.3 or above
FortiOS 7.2 | 7.2.0 through 7.2.6 | Upgrade to 7.2.7 or above
FortiOS 7.0 | 7.0.0 through 7.0.13 | Upgrade to 7.0.14 or above
FortiOS 6.4 | 6.4.0 through 6.4.14 | Upgrade to 6.4.15 or above
FortiOS 6.2 | 6.2.0 through 6.2.15 | Upgrade to 6.2.16 or above
FortiOS 6.0 | 6.0 all versions | Migrate to a fixed release
Workaround : disable SSL VPN (disable webmode is NOT a valid workaround)
Note: This is potentially being exploited in the wild.
Follow the recommended upgrade path using our tool at: https://
docs.fortinet.com/upgrade-tool
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