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CVE-2020-11683

MEDIUMCVSS 6.8/10EPSS 0.51%

Last modified

CVE-2020-11683 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. 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.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
6.8/10

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

EPSS Probability
0.51%

39.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Linux4samAt91bootstrap>= 3.7.2, < 3.9.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-11683?
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.
How severe is CVE-2020-11683?
CVE-2020-11683 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.
How do I fix CVE-2020-11683?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-11683?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST