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5.4 Medium

CVE-2020-12820 Under non-default configuration, a stack-based buffer overflow in FortiOS version 6.0.10 and below, version 5.6.12 and…

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.

Affected products and versions

Product Affected versions Fixed in
FortiOS 6.0 6.0.0 → 6.0.10 No fix stated
FortiOS 5.6 5.6.0 → 5.6.12 No fix stated

References

Timeline

  1. Published
  2. Last modified

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