Fortinet FortiOS

CVE-2020-12820
MEDIUM 5.4

At a glance

Source
NVD
EPSS
EPSS 0.89 % · percentile 59 ()
State
PUBLISHED
Published
Updated
Assigner
fortinet
NVD status
Analyzed

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.

Weaknesses (CWE)

  • CWE-121 — Stack-based Buffer Overflow
  • CWE-787 — Out-of-bounds Write

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:U/RL:X/RC:Xfortinet
CVSS 3.1MEDIUM 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:LNVD · psirt@fortinet.com (Secondary)
CVSS 3.1HIGH 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Fortinet · FortiOSaffected 6.0.0 ≤ 6.0.10 ; affected 5.6.0 ≤ 5.6.12

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD