CVE-2020-11684
Last modified
CVE-2020-11684 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. AT91bootstrap before 3.9.2 does not properly wipe encryption and authentication keys from memory before passing control to a less privileged software component. This can be exploited to disclose these keys and subsequently encrypt and sign the next boot stage (such as the bootloader).. EPSS estimates a 1.08% chance of exploitation in the next 30 days.
Description
AT91bootstrap before 3.9.2 does not properly wipe encryption and authentication keys from memory before passing control to a less privileged software component. This can be exploited to disclose these keys and subsequently encrypt and sign the next boot stage (such as the bootloader).
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux4sam | At91bootstrap | >= 3.7.2, < 3.9.2 |
References
- https://github.com/linux4sam/at91bootstrap/commit/45419497309ffbf27c17ea7938499aca99168927Patch, Third Party Advisory
- https://labs.f-secure.com/advisories/microchip-at91bootstrap/Exploit, Third Party Advisory
- https://github.com/linux4sam/at91bootstrap/commit/45419497309ffbf27c17ea7938499aca99168927Patch, Third Party Advisory
- https://labs.f-secure.com/advisories/microchip-at91bootstrap/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
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