EN

CVE-2021-43072

Medium
6.7
0.05.010.0
Year
2023
Published
Jul 18, 2023
Known Affected Devices
0
CVSS Score
6.7

What is CVE-2021-43072?

A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiAnalyzer version 7.0.2 and below, version 6.4.7 and below, version 6.2.9 and below, version 6.0.11 and below, version 5.6.11 and below, FortiManager version 7.0.2 and below, version 6.4.7 and below, version 6.2.9 and below, version 6.0.11 and below, version 5.6.11 and below, FortiOS version 7.0.0 through 7.0.4, 6.4.0 through 6.4.8, 6.2.0 through 6.2.10, 6.0.x and FortiProxy version 7.0.0 through 7.0.3, 2.0.0 through 2.0.8, 1.2.x, 1.1.x and 1.0.x allows attacker to execute unauthorized code or commands via crafted CLI `execute restore image` and `execute certificate remote` operations with the tFTP protocol.

CVSS Vector Breakdown

CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AV
Attack Vector
Local

Requires local access — attacker must be logged in or have physical access to the device.

AC
Attack Complexity
Low

No special conditions required. Exploit can be performed reliably and repeatedly.

PR
Privileges Required
High

Administrative or root-level privileges required to exploit.

UI
User Interaction
None

No user interaction required. Exploit runs without any victim action.

S
Scope
Unchanged

Exploiting the vulnerability only affects the vulnerable component itself.

C
Confidentiality Impact
High

Complete loss of confidentiality. All data on the component may be exposed.

I
Integrity Impact
High

Complete loss of integrity. Attacker can modify any file or data on the component.

A
Availability Impact
High

Complete denial of service. The component becomes fully unavailable.

Known Affected Devices

Fortinet Fortinet FortiGate 40F Fortinet Fortinet FortiGate 60E Fortinet Fortinet FortiGate 61E Fortinet Fortinet FortiGate 80E Fortinet Fortinet FortiGate 100F Fortinet Fortinet FortiGate 201F Fortinet Fortinet FortiGate 300E Fortinet Fortinet FortiGate 400F Fortinet Fortinet FortiGate 501E Fortinet Fortinet FortiGate 600E Fortinet Fortinet FortiGate 900D Fortinet Fortinet FortiGate 1100E Fortinet Fortinet FortiGate 1101E Fortinet Fortinet FortiGate 1800F Fortinet Fortinet FortiGate 2200E Fortinet Fortinet FortiGate 2201E Fortinet Fortinet FortiGate 2500E Fortinet Fortinet FortiGate 3000D Fortinet Fortinet FortiGate 3100D Fortinet Fortinet FortiGate 3200D Fortinet Fortinet FortiGate 3400E Fortinet Fortinet FortiGate 3401E Fortinet Fortinet FortiGate 4200F Fortinet Fortinet FortiGate 4401F Fortinet Fortinet FortiGate 6300F Fortinet Fortinet FortiGate 6501F Fortinet Fortinet FortiGate 7040E Fortinet Fortinet FortiGate 7121F Fortinet Fortinet FortiGate VM01 Fortinet Fortinet FortiGate VM04 Fortinet Fortinet FortiGate VM08

FAQ

How severe is CVE-2021-43072?

CVE-2021-43072 has a CVSS score of 6.7/10, rated as Medium. Review the affected products list and apply vendor patches.

What does the CVSS score mean for CVE-2021-43072?

CVSS (Common Vulnerability Scoring System) rates vulnerability severity from 0.0 to 10.0. CVE-2021-43072 scores 6.7/10 (Medium). Scores 9.0–10.0 are Critical, 7.0–8.9 are High, 4.0–6.9 are Medium, and below 4.0 are Low.

Which devices are affected by CVE-2021-43072?

The list of devices confirmed to be affected by CVE-2021-43072 is shown in the "Affected Devices" section above. Check your firmware version against the vendor security advisory and apply the latest patch.

How do I fix or mitigate CVE-2021-43072?

Apply the latest firmware or software update from the vendor. Check the References section above for official advisories and patch notes. If no patch is available, consider disabling the affected feature or isolating the device from untrusted networks.