WithSecure Client Security Scanner 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 (≈)
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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.
5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in WithSecure Client Security, Server Security, Email and Server Security, Elements Endpoint Protection, Client Security for Mac, Elements Endpoint Protection for Mac, Linux Security, Linux Protection and Atlant. It has been declared as problematic. This issue affects some unknown processing of the component Scanner. Such manipulation leads to denial of service. This vulnerability is referenced as CVE-2023-49321. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in WithSecure Client Security, Server Security, Email and Server Security, Elements Endpoint Protection, Client Security for Mac, Elements Endpoint Protection for Mac, Linux Security, Linux Protection and Atlant. It has been rated as problematic. Affected by this issue is some unknown processing of the component Scanner. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

Certain WithSecure products allow a Denial of Service because scanning a crafted file takes a long time, and causes the scanner to hang. This affects WithSecure Client Security 15, WithSecure Server Security 15, WithSecure Email and Server Security 15, WithSecure Elements Endpoint Protection 17 and later, WithSecure Client Security for Mac 15, WithSecure Elements Endpoint Protection for Mac 17 and later, WithSecure Linux Security 64 12.0, WithSecure Linux Protection 12.0, and WithSecure Atlant 1.0.35-1.

The weakness was published 11/27/2023. The advisory is shared for download at withsecure.com. This vulnerability is handled as CVE-2023-49321 since 11/26/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-53305). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 5.3
NVD Vector: 🔍

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/26/2023 🔍
11/27/2023 +1 days 🔍
11/27/2023 +0 days 🔍
03/02/2026 +826 days 🔍

Sourcesinfo

Advisory: withsecure.com
Status: Confirmed

CVE: CVE-2023-49321 (🔍)
GCVE (CVE): GCVE-0-2023-49321
GCVE (VulDB): GCVE-100-246140
EUVD: 🔍

Entryinfo

Created: 11/27/2023 06:56
Updated: 03/02/2026 19:45
Changes: 11/27/2023 06:56 (37), 12/16/2023 19:30 (9), 03/02/2026 19:45 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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