ARM Mbed TLS/ARM Mbed Crypto ECDSA RNG information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability was found in ARM Mbed TLS and ARM Mbed Crypto and classified as critical. This affects an unknown part of the component ECDSA. Executing a manipulation can lead to information disclosure (RNG). This vulnerability is tracked as CVE-2019-16910. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in ARM Mbed TLS and ARM Mbed Crypto (the affected version is unknown). It has been declared as problematic. This vulnerability affects an unknown code of the component ECDSA. The manipulation with an unknown input leads to a information disclosure vulnerability (RNG). The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

Arm Mbed TLS before 2.19.0 and Arm Mbed Crypto before 2.0.0, when deterministic ECDSA is enabled, use an RNG with insufficient entropy for blinding, which might allow an attacker to recover a private key via side-channel attacks if a victim signs the same message many times. (For Mbed TLS, the fix is also available in versions 2.7.12 and 2.16.3.)

The weakness was disclosed 09/26/2019 (Website). The advisory is available at lists.fedoraproject.org. This vulnerability was named CVE-2019-16910 since 09/26/2019. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

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Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.1

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: RNG
Class: Information disclosure / RNG
CWE: CWE-200 / CWE-284 / CWE-266
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: 🔍

Patch: github.com

Timelineinfo

09/26/2019 🔍
09/26/2019 +0 days 🔍
09/27/2019 +1 days 🔍
06/05/2026 +2443 days 🔍

Sourcesinfo

Advisory: 298a43a77ec0ed2c19a8c924ddd8571ef3e65dfd
Status: Confirmed

CVE: CVE-2019-16910 (🔍)
GCVE (CVE): GCVE-0-2019-16910
GCVE (VulDB): GCVE-100-142342

Entryinfo

Created: 09/27/2019 14:34
Updated: 06/05/2026 22:13
Changes: 09/27/2019 14:34 (54), 09/10/2020 14:55 (1), 12/28/2023 13:02 (5), 12/28/2023 13:10 (1), 06/05/2026 22:13 (18)
Complete: 🔍
Cache ID: 216::103

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