Vulnerability in Linux4sam At91bootstrap
CVE-2020-11684
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).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.011 (63.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/linux4sam/at91bootstrap/commit/45419497309ffbf27c17ea7938499aca99168… (Patch, Third Party Advisory)
- labs.f-secure.com/advisories/microchip-at91bootstrap/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-11684?
- CVE-2020-11684 is a critical-severity vulnerability in Linux4sam At91bootstrap, classified under Improper Removal of Sensitive Information Before Storage or Transfer. CVSS score: 9.1/10. Published 2020-09-14.
- How severe is CVE-2020-11684?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2020-11684 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.