Fortinet FortiOS up to 7.0.0 Firmware Verification buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Fortinet FortiOS up to 7.0.0. It has been classified as critical. This issue affects some unknown processing of the component Firmware Verification Handler. Performing a manipulation results in buffer overflow. This vulnerability is cataloged as CVE-2021-24018. The attack must originate from the local network. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Fortinet FortiOS up to 7.0.0 (Firewall Software). This affects an unknown code block of the component Firmware Verification Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. 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. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 08/05/2021 as FG-IR-21-046. The advisory is shared at fortiguard.com. This vulnerability is uniquely identified as CVE-2021-24018. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 209755 (Fortinet Fortigate Buffer Underwrite in firmware verification (FG-IR-21-046)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.0.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (209755). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209755
Nessus Name: Fortinet Fortigate Buffer Underwrite in firmware verification (FG-IR-21-046)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FortiOS 7.0.1

Timelineinfo

01/13/2021 🔍
08/05/2021 +203 days 🔍
08/05/2021 +0 days 🔍
10/29/2024 +1181 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-21-046
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-24018 (🔍)
GCVE (CVE): GCVE-0-2021-24018
GCVE (VulDB): GCVE-100-180129

Entryinfo

Created: 08/05/2021 08:14
Updated: 10/29/2024 15:41
Changes: 08/05/2021 08:14 (40), 08/08/2021 14:59 (3), 08/08/2021 15:00 (1), 10/29/2024 15:41 (16)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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