ARM Mbed TLS up to 2.16.6/2.22.x ECC Private Key information exposure

CVSS Meta Temp Score
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CTI Interest Score
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2.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in ARM Mbed TLS up to 2.16.6/2.22.x. The affected element is the function mbedtls_ecp_check_pub_priv/mbedtls_pk_parse_key/mbedtls_pk_parse_keyfile/mbedtls_ecp_mul/mbedtls_ecp_mul_restartable of the component ECC Private Key Handler. Executing a manipulation can lead to information exposure. This vulnerability appears as CVE-2020-36422. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in ARM Mbed TLS up to 2.16.6/2.22.x and classified as problematic. This vulnerability affects the function mbedtls_ecp_check_pub_priv/mbedtls_pk_parse_key/mbedtls_pk_parse_keyfile/mbedtls_ecp_mul/mbedtls_ecp_mul_restartable of the component ECC Private Key Handler. The manipulation with an unknown input leads to a information exposure vulnerability. The CWE definition for the vulnerability is CWE-203. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not. As an impact it is known to affect confidentiality.

The weakness was presented 07/19/2021. The advisory is shared for download at bugs.gentoo.org. This vulnerability was named CVE-2020-36422. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 2.16.7 or 2.23.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.6
VulDB Meta Temp Score: 2.5

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
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: Information exposure
CWE: CWE-203 / CWE-200 / CWE-284
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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: Mbed TLS 2.16.7/2.23.0

Timelineinfo

07/19/2021 🔍
07/19/2021 +0 days 🔍
07/19/2021 +0 days 🔍
07/22/2021 +3 days 🔍

Sourcesinfo

Advisory: bugs.gentoo.org
Status: Confirmed

CVE: CVE-2020-36422 (🔍)
GCVE (CVE): GCVE-0-2020-36422
GCVE (VulDB): GCVE-100-178888

Entryinfo

Created: 07/19/2021 21:39
Updated: 07/22/2021 10:04
Changes: 07/19/2021 21:39 (40), 07/22/2021 10:04 (2)
Complete: 🔍
Cache ID: 216::103

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