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Fortinet FortiOS: Out-of-bounds Write (CVE-2020-12819)

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Fortinet FortiOS: Out-of-bounds Write (CVE-2020-12819)

Severity
9
CVSS
(AV:N/AC:M/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

A heap-based buffer overflow vulnerability in the processing of Link Control Protocol messages in FortiGate versions 5.6.12, 6.0.10, 6.2.4 and 6.4.1 and earlier may allow a remote attacker with valid SSL VPN credentials to crash the SSL VPN daemon by sending a large LCP packet, when tunnel mode is enabled. Arbitrary code execution may be theoretically possible, albeit practically very difficult to achieve in this context

Solution(s)

  • fortios-upgrade-5_6_13
  • fortios-upgrade-6_0_11
  • fortios-upgrade-6_2_5
  • fortios-upgrade-6_4_2

References

  • https://attackerkb.com/topics/cve-2020-12819
  • CVE - 2020-12819
  • https://fortiguard.com/advisory/FG-IR-20-082
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