Siemens RUGGEDCOM ROS M2100 up to 5.5.x Private Key timing discrepancy

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Siemens RUGGEDCOM ROS M2100, RUGGEDCOM ROS RMC8388, RUGGEDCOM ROS RS416v2, RUGGEDCOM ROS RS900G, RUGGEDCOM ROS RS900G, RUGGEDCOM ROS RSG2100, RUGGEDCOM ROS RSG2100P, RUGGEDCOM ROS RSG2100P, RUGGEDCOM ROS RSG2288, RUGGEDCOM ROS RSG2300, RUGGEDCOM ROS RSG2300P, RUGGEDCOM ROS RSG2488, RUGGEDCOM ROS RSG900, RUGGEDCOM ROS RSG920P, RUGGEDCOM ROS RSL910, RUGGEDCOM ROS RST2228, RUGGEDCOM ROS RST916C and RUGGEDCOM ROS RST916P up to 5.5.x. The affected element is an unknown function of the component Private Key Handler. Performing a manipulation results in timing discrepancy. This vulnerability was named CVE-2021-42016. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Siemens RUGGEDCOM ROS M2100, RUGGEDCOM ROS RMC8388, RUGGEDCOM ROS RS416v2, RUGGEDCOM ROS RS900G, RUGGEDCOM ROS RS900G, RUGGEDCOM ROS RSG2100, RUGGEDCOM ROS RSG2100P, RUGGEDCOM ROS RSG2100P, RUGGEDCOM ROS RSG2288, RUGGEDCOM ROS RSG2300, RUGGEDCOM ROS RSG2300P, RUGGEDCOM ROS RSG2488, RUGGEDCOM ROS RSG900, RUGGEDCOM ROS RSG920P, RUGGEDCOM ROS RSL910, RUGGEDCOM ROS RST2228, RUGGEDCOM ROS RST916C and RUGGEDCOM ROS RST916P up to 5.5.x. It has been classified as problematic. This affects some unknown functionality of the component Private Key Handler. The manipulation with an unknown input leads to a timing discrepancy vulnerability. CWE is classifying the issue as CWE-208. Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not. This is going to have an impact on confidentiality.

The weakness was presented 03/08/2022 as ssa-256353. It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2021-42016 since 10/06/2021. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 5.6.0 eliminates this vulnerability.

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Productinfo

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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: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Timing discrepancy
CWE: CWE-208 / CWE-203 / CWE-200
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: 🔍

Upgrade: RUGGEDCOM ROS M2100/RUGGEDCOM ROS RMC8388/RUGGEDCOM ROS RS416v2/RUGGEDCOM ROS RS900G/RUGGEDCOM ROS RS900G/RUGGEDCOM ROS RSG2100/RUGGEDCOM ROS RSG2100P/RUGGEDCOM ROS RSG2100P/RUGGEDCOM ROS RSG2288/RUGGEDCOM ROS RSG2300/RUGGEDCOM ROS RSG2300P/RUGGEDCOM ROS RSG2488/RUGGEDCOM ROS RSG900/RUGGEDCOM ROS RSG920P/RUGGEDCOM ROS RSL910/RUGGEDCOM ROS RST2228/RUGGEDCOM ROS RST916C/RUGGEDCOM ROS RST916P 5.6.0

Timelineinfo

10/06/2021 🔍
03/08/2022 +153 days 🔍
03/08/2022 +0 days 🔍
08/12/2025 +1253 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-256353
Status: Confirmed

CVE: CVE-2021-42016 (🔍)
GCVE (CVE): GCVE-0-2021-42016
GCVE (VulDB): GCVE-100-194343

Entryinfo

Created: 03/08/2022 15:06
Updated: 08/12/2025 14:34
Changes: 03/08/2022 15:06 (39), 03/08/2022 15:12 (1), 03/11/2022 08:08 (1), 08/12/2025 14:34 (42)
Complete: 🔍
Cache ID: 216::103

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