Siemens LOGO CMR2020/LOGO CMR2040/SIMATIC RTU 3000 TCP Stack random values

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.
5.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Siemens LOGO CMR2020, LOGO CMR2040 and SIMATIC RTU 3000. Affected by this vulnerability is an unknown functionality of the component TCP Stack. Performing a manipulation results in random values. This vulnerability is cataloged as CVE-2021-37186. The attack must originate from the local network. There is no exploit available.

Detailsinfo

A vulnerability was found in Siemens LOGO CMR2020, LOGO CMR2040 and SIMATIC RTU 3000 (SCADA Software) (affected version unknown). It has been classified as problematic. This affects an unknown functionality of the component TCP Stack. The manipulation with an unknown input leads to a random values vulnerability. CWE is classifying the issue as CWE-330. The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 09/14/2021 as ssa-316383. The advisory is shared at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2021-37186 since 07/21/2021. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/14/2021). MITRE ATT&CK project uses the attack technique T1600.001 for this issue.

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

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.0
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Random values
CWE: CWE-330 / CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/21/2021 🔍
09/14/2021 +55 days 🔍
09/14/2021 +0 days 🔍
09/17/2021 +3 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-316383
Status: Confirmed

CVE: CVE-2021-37186 (🔍)
GCVE (CVE): GCVE-0-2021-37186
GCVE (VulDB): GCVE-100-182589

Entryinfo

Created: 09/14/2021 15:54
Updated: 09/17/2021 07:31
Changes: 09/14/2021 15:54 (38), 09/17/2021 07:31 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!