VDB-203574 · CVE-2021-44221 · ssa-580125

Siemens SIMATIC eaSie Core Package up to 21.x Message 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.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic was found in Siemens SIMATIC eaSie Core Package up to 21.x. This affects an unknown function of the component Message Handler. The manipulation results in denial of service. This vulnerability is cataloged as CVE-2021-44221. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Siemens SIMATIC eaSie Core Package up to 21.x (SCADA Software). Affected is an unknown function of the component Message Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

A vulnerability has been identified in SIMATIC eaSie Core Package (All versions < V22.00). The affected systems do not properly validate input that is sent to the underlying message passing framework. This could allow an remote attacker to trigger a denial of service of the affected system.

The weakness was shared 07/12/2022 as ssa-580125. The advisory is available at cert-portal.siemens.com. This vulnerability is traded as CVE-2021-44221 since 11/25/2021. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 22.00 eliminates this vulnerability.

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Productinfo

Type

SCADA Software

Vendor

Siemens

Name

SIMATIC eaSie Core Package

Version

21.x

License

commercial

Website

Vendor: https://www.siemens.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

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: SIMATIC eaSie Core Package 22.00

Timelineinfo

11/25/2021 🔍
07/12/2022 +228 days 🔍
07/12/2022 +0 days 🔍
07/21/2022 +9 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-580125
Status: Confirmed

CVE: CVE-2021-44221 (🔍)
GCVE (CVE): GCVE-0-2021-44221
GCVE (VulDB): GCVE-100-203574

Entryinfo

Created: 07/12/2022 15:34
Updated: 07/21/2022 14:29
Changes: 07/12/2022 15:34 (42), 07/21/2022 14:29 (18)
Complete: 🔍
Cache ID: 216::103