F-Secure Antivirus Engine PST File denial of service

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in F-Secure Antivirus Engine. This vulnerability affects unknown code of the component PST File Handler. Executing a manipulation can lead to denial of service. The identification of this vulnerability is CVE-2021-40836. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in F-Secure Antivirus Engine (Anti-Malware Software) (the affected version unknown). This vulnerability affects an unknown part of the component PST File Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The weakness was shared 12/22/2021. The advisory is shared for download at f-secure.com. This vulnerability was named CVE-2021-40836 since 09/09/2021. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 4.6
CNA Vector (F-Secure): 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: 🔍

Timelineinfo

09/09/2021 🔍
12/13/2021 +95 days 🔍
12/22/2021 +9 days 🔍
12/22/2021 +0 days 🔍
12/25/2021 +3 days 🔍

Sourcesinfo

Vendor: f-secure.com

Advisory: f-secure.com
Status: Confirmed

CVE: CVE-2021-40836 (🔍)
GCVE (CVE): GCVE-0-2021-40836
GCVE (VulDB): GCVE-100-188884

Entryinfo

Created: 12/22/2021 14:36
Updated: 12/25/2021 16:37
Changes: 12/22/2021 14:36 (49), 12/25/2021 16:37 (1)
Complete: 🔍
Cache ID: 216::103

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