CVE-2021-43072 : A buffer copy without checking size of input ('classic buffer overflow') in Fort

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.

Published 2023-07-18 03:15:55

Updated 2023-07-27 17:23:24

Source Fortinet, Inc.

View at NVD, CVE.org

Vulnerability category: Overflow

Products affected by CVE-2021-43072

Fortinet » Fortios
Versions from including (>=) 6.4.0 and before (<) 6.4.9
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
Matching versions
Fortinet » Fortios
Versions from including (>=) 7.0.0 and before (<) 7.0.6
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
Matching versions
Fortinet » Fortios
Versions from including (>=) 6.0.0 and before (<) 6.2.11
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
Matching versions
Fortinet » Fortimanager
Versions from including (>=) 7.0.0 and before (<) 7.0.3
cpe:2.3:a:fortinet:fortimanager:*:*:*:*:*:*:*:*
Matching versions
Fortinet » Fortimanager
Versions from including (>=) 5.6.0 and before (<) 6.4.8
cpe:2.3:a:fortinet:fortimanager:*:*:*:*:*:*:*:*
Matching versions
Fortinet » Fortianalyzer
Versions from including (>=) 5.6.0 and before (<) 6.4.8
cpe:2.3:a:fortinet:fortianalyzer:*:*:*:*:*:*:*:*
Matching versions
Fortinet » Fortianalyzer
Versions from including (>=) 7.0.0 and before (<) 7.0.3
cpe:2.3:a:fortinet:fortianalyzer:*:*:*:*:*:*:*:*
Matching versions
Fortinet » Fortiproxy
Versions from including (>=) 1.0.0 and before (<) 2.0.9
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
Matching versions
Fortinet » Fortiproxy
Versions from including (>=) 7.0.0 and before (<) 7.0.4
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-43072

EPSS FAQ

0.04%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 10 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-43072

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.7	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	0.8	5.9	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: High User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
6.7	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	0.8	5.9	Fortinet, Inc.
Attack Vector: Local Attack Complexity: Low Privileges Required: High User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2021-43072

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-43072

https://fortiguard.com/advisory/FG-IR-21-206

PSIRT Advisories | FortiGuard
https://www.fortiguard.com/psirt/FG-IR-21-206

PSIRT Advisories | FortiGuard
Vendor Advisory

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Vulnerability Details : CVE-2021-43072

Products affected by CVE-2021-43072

Exploit prediction scoring system (EPSS) score for CVE-2021-43072

CVSS scores for CVE-2021-43072

CWE ids for CVE-2021-43072

References for CVE-2021-43072