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Fortinet FortiOS: Out-of-bounds Write (CVE-2020-12820)

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Fortinet FortiOS: Out-of-bounds Write (CVE-2020-12820)

Severity
9
CVSS
(AV:N/AC:L/Au:S/C:C/I:C/A:C)
Published
12/19/2024
Created
01/28/2025
Added
01/27/2025
Modified
01/28/2025

Description

Under non-default configuration, a stack-based buffer overflow in FortiOS version 6.0.10 and below, version 5.6.12 and below may allow a remote attacker authenticated to the SSL VPN to crash the FortiClient NAC daemon (fcnacd) and potentially execute arbitrary code via requesting a large FortiClient file name. We are not aware of proof of concept code successfully achieving the latter.

Solution(s)

  • fortios-upgrade-5_6_13
  • fortios-upgrade-6_0_11

References

  • https://attackerkb.com/topics/cve-2020-12820
  • CVE - 2020-12820
  • https://fortiguard.fortinet.com/psirt/FG-IR-20-083
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  • 已创建
  • 最后回复

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