VDB-181291 · CVE-2021-33598 · fsc-2021-3359

F-Secure Endpoint Protection/Linux Security prior 2021-08-10_07 on Windows Antivirus Engine 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.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in F-Secure Endpoint Protection and Linux Security on Windows. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the component Antivirus Engine. This manipulation causes denial of service. This vulnerability is handled as CVE-2021-33598. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in F-Secure Endpoint Protection and Linux Security on Windows and classified as problematic. Affected by this vulnerability is an unknown code block of the component Antivirus Engine. 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 released 08/23/2021 by Antti Levomäki and Christian Jalio with Forcepoint as fsc-2021-3359. It is possible to read the advisory at f-secure.com. This vulnerability is known as CVE-2021-33598. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 2021-08-10_07 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

F-Secure

Name

License

commercial

Website

Vendor: https://www.f-secure.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Endpoint Protection/Linux Security 2021-08-10_07

Timelineinfo

05/27/2021 🔍
08/10/2021 +75 days 🔍
08/23/2021 +13 days 🔍
08/23/2021 +0 days 🔍
08/25/2021 +2 days 🔍

Sourcesinfo

Vendor: f-secure.com

Advisory: fsc-2021-3359
Researcher: Antti Levomäki, Christian Jalio
Organization: Forcepoint
Status: Confirmed

CVE: CVE-2021-33598 (🔍)
GCVE (CVE): GCVE-0-2021-33598
GCVE (VulDB): GCVE-100-181291

Entryinfo

Created: 08/23/2021 15:58
Updated: 08/25/2021 20:31
Changes: 08/23/2021 15:58 (40), 08/23/2021 15:59 (2), 08/25/2021 20:24 (2), 08/25/2021 20:31 (1)
Complete: 🔍
Submitter: CSieberg
Cache ID: 216::103

Submitinfo

Accepted

Submit #18822: CVE-2021-33598 // DoS in F-Secure (by CSieberg)