What is the CVSS score of CVE-2020-11683?

CVE-2020-11683 has a CVSS 3.1 base score of 6.8 (Medium). CVSS vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.5%.

Is there a public PoC exploit available for CVE-2020-11683?

Yes, a public proof-of-concept exploit is available for CVE-2020-11683. Prioritise patching immediately. EPSS: 0.5%.

Is there a patch available for CVE-2020-11683?

Yes, a patch is available for CVE-2020-11683. Update the affected software to the latest version immediately.

At91Bootstrap CVE-2020-11683

MEDIUM

Observable Discrepancy (CWE-203)

2020-09-14 cve@mitre.org

RCE At91Bootstrap

6.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.8 MEDIUM

AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Sep 14, 2020 - 14:15 nvd

MEDIUM 6.8

DescriptionNVD

A timing side channel was discovered in AT91bootstrap before 3.9.2. It can be exploited by attackers with physical access to forge CMAC values and subsequently boot arbitrary code on an affected system.

AnalysisAI

A timing side channel was discovered in AT91bootstrap before 3.9.2. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-203. A timing side channel was discovered in AT91bootstrap before 3.9.2. It can be exploited by attackers with physical access to forge CMAC values and subsequently boot arbitrary code on an affected system. Affected products include: Linux4Sam At91Bootstrap. Version information: before 3.9.2..

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.