Siemens Nucleus NET DNS Module random values

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Siemens Nucleus NET, Nucleus RTOS, Nucleus ReadyStart, Nucleus Source Code and VSTAR. This issue affects some unknown processing of the component DNS Module. Performing a manipulation results in random values. This vulnerability was named CVE-2021-27393. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Siemens Nucleus NET, Nucleus RTOS, Nucleus ReadyStart, Nucleus Source Code and VSTAR. This affects an unknown code of the component DNS Module. 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 presented 04/23/2021 as ssa-201384. The advisory is shared at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2021-27393. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600.001 for this issue.

Upgrading eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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: 4.8

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 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: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/18/2021 🔍
04/23/2021 +63 days 🔍
04/23/2021 +0 days 🔍
04/27/2021 +4 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-201384
Status: Confirmed

CVE: CVE-2021-27393 (🔍)
GCVE (CVE): GCVE-0-2021-27393
GCVE (VulDB): GCVE-100-173793

Entryinfo

Created: 04/23/2021 08:44
Updated: 04/27/2021 14:44
Changes: 04/23/2021 08:44 (37), 04/27/2021 14:44 (5)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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