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

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.

Upgrading to version 7.0.1 eliminates this vulnerability.

Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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

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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
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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 🔍
08/08/2021 +3 days 🔍

Sourcesinfo

Vendor: fortinet.com

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

CVE: CVE-2021-24018 (🔍)

Entryinfo

Created: 08/05/2021 08:14
Updated: 08/08/2021 15:00
Changes: 08/05/2021 08:14 (40), 08/08/2021 14:59 (3), 08/08/2021 15:00 (1)
Complete: 🔍

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