ARM Mbed TLS up to 2.7.16/2.16.6/2.22.x Private Key information exposure

Summaryinfo

A vulnerability marked as problematic has been reported in ARM Mbed TLS up to 2.7.16/2.16.6/2.22.x. The impacted element is an unknown function of the component Private Key Handler. The manipulation leads to information exposure. This vulnerability is traded as CVE-2020-36424. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in ARM Mbed TLS up to 2.7.16/2.16.6/2.22.x and classified as problematic. This issue affects an unknown code of the component Private Key Handler. The manipulation with an unknown input leads to a information exposure vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality.

The weakness was shared 07/19/2021. The advisory is shared at tls.mbed.org. The identification of this vulnerability is CVE-2020-36424. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 247388 (Linux Distros Unpatched Vulnerability : CVE-2020-36424), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.7.17, 2.16.8 or 2.24.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (247388). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• ARM

Name

• Mbed TLS

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.7.0
• 2.7.1
• 2.7.2
• 2.7.3
• 2.7.4
• 2.7.5
• 2.7.6
• 2.7.7
• 2.7.8
• 2.7.9
• 2.7.10
• 2.7.11
• 2.7.12
• 2.7.13
• 2.7.14
• 2.7.15
• 2.7.16
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.16.0
• 2.16.1
• 2.16.2
• 2.16.3
• 2.16.4
• 2.16.5
• 2.16.6
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22

License

• commercial

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

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

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