VDB-200445 · CVE-2022-27640 · ssa-480937

Siemens SIMATIC CP 442-1 RNA/SIMATIC CP 443-1 RNA prior 1.5.18 ARP Broadcast resource consumption

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.
6.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Siemens SIMATIC CP 442-1 RNA and SIMATIC CP 443-1 RNA. It has been rated as problematic. This vulnerability affects unknown code of the component ARP Broadcast Handler. Performing a manipulation results in resource consumption. This vulnerability is known as CVE-2022-27640. Access to the local network is required for this attack. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Siemens SIMATIC CP 442-1 RNA and SIMATIC CP 443-1 RNA (SCADA Software). It has been classified as critical. This affects an unknown function of the component ARP Broadcast Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability.

The weakness was published 05/20/2022 as ssa-480937. The advisory is shared at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2022-27640 since 03/22/2022. Neither technical details nor an exploit are publicly available.

Upgrading to version 1.5.18 eliminates this vulnerability.

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Productinfo

Type

SCADA Software

Vendor

Siemens

Name

License

commercial

Website

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

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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 CP 442-1 RNA/SIMATIC CP 443-1 RNA 1.5.18

Timelineinfo

03/22/2022 🔍
05/20/2022 +58 days 🔍
05/20/2022 +0 days 🔍
05/27/2022 +7 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-480937
Status: Confirmed

CVE: CVE-2022-27640 (🔍)
GCVE (CVE): GCVE-0-2022-27640
GCVE (VulDB): GCVE-100-200445

Entryinfo

Created: 05/20/2022 17:18
Updated: 05/27/2022 08:52
Changes: 05/20/2022 17:18 (40), 05/27/2022 08:52 (1)
Complete: 🔍
Cache ID: 216::103