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9.1
CRITICAL CVSS 3.1
CVE-2020-11684
Atmel AT91bootstrap Key Disclosure
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).

INFO

Published Date :

Sept. 14, 2020, 2:15 p.m.

Last Modified :

Nov. 21, 2024, 4:58 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2020-11684 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux4sam at91bootstrap
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 CRITICAL [email protected]
Public PoC/Exploit Available at Github

CVE-2020-11684 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-11684.

URL Resource
https://github.com/linux4sam/at91bootstrap/commit/45419497309ffbf27c17ea7938499aca99168927 Patch Third Party Advisory
https://labs.f-secure.com/advisories/microchip-at91bootstrap/ Exploit Third Party Advisory
https://github.com/linux4sam/at91bootstrap/commit/45419497309ffbf27c17ea7938499aca99168927 Patch Third Party Advisory
https://labs.f-secure.com/advisories/microchip-at91bootstrap/ Exploit Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-11684 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-11684 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
f-secure-foundry/advisories

(Inverse Path | F-Secure) Hardware Security Team - Security Advisories

Updated: 1 year ago
24 stars 4 fork 4 watcher
Born at : July 23, 2019, 3:04 p.m. This repo has been linked 20 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-11684 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2020-11684 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/linux4sam/at91bootstrap/commit/45419497309ffbf27c17ea7938499aca99168927
    Added Reference https://labs.f-secure.com/advisories/microchip-at91bootstrap/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Jul. 21, 2021

    Action Type Old Value New Value
    Changed CWE CWE-326 CWE-212
  • Reanalysis by [email protected]

    Apr. 08, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:linux4sam:at91bootstrap:*:*:*:*:*:*:*:* versions up to (excluding) 3.9.2 OR *cpe:2.3:a:linux4sam:at91bootstrap:*:*:*:*:*:*:*:* versions from (including) 3.7.2 up to (excluding) 3.9.2
  • Initial Analysis by [email protected]

    Sep. 17, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    Changed Reference Type https://github.com/linux4sam/at91bootstrap/commit/45419497309ffbf27c17ea7938499aca99168927 No Types Assigned https://github.com/linux4sam/at91bootstrap/commit/45419497309ffbf27c17ea7938499aca99168927 Patch, Third Party Advisory
    Changed Reference Type https://labs.f-secure.com/advisories/microchip-at91bootstrap/ No Types Assigned https://labs.f-secure.com/advisories/microchip-at91bootstrap/ Exploit, Third Party Advisory
    Added CWE NIST CWE-326
    Added CPE Configuration OR *cpe:2.3:a:linux4sam:at91bootstrap:*:*:*:*:*:*:*:* versions up to (excluding) 3.9.2
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 6.4
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.17 }} -0.16%

score

0.35271

percentile