ARM mbed TLS up to 2.7.17 LTS/2.16.8 LTS/2.24.x Diffie-Hellman Key Pair Generator mbedtls_mpi_exp_mod denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in ARM mbed TLS up to 2.7.17 LTS/2.16.8 LTS/2.24.x. Affected is the function mbedtls_mpi_exp_mod of the component Diffie-Hellman Key Pair Generator. Such manipulation leads to denial of service. This vulnerability is listed as CVE-2020-36475. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in ARM mbed TLS up to 2.7.17 LTS/2.16.8 LTS/2.24.x. It has been rated as problematic. Affected by this issue is the function mbedtls_mpi_exp_mod of the component Diffie-Hellman Key Pair Generator. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was presented 08/23/2021. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2020-36475. There are known technical details, but no exploit is available.

Upgrading to version 2.7.18 LTS, 2.16.9 LTS or 2.25.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
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: Denial of service
CWE: CWE-404
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 2.7.18 LTS/2.16.9 LTS/2.25.0

Timelineinfo

08/23/2021 🔍
08/23/2021 +0 days 🔍
08/23/2021 +0 days 🔍
08/25/2021 +2 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2020-36475 (🔍)
GCVE (CVE): GCVE-0-2020-36475
GCVE (VulDB): GCVE-100-181268

Entryinfo

Created: 08/23/2021 07:41
Updated: 08/25/2021 17:38
Changes: 08/23/2021 07:41 (40), 08/25/2021 17:38 (2)
Complete: 🔍
Cache ID: 216::103

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