Out-of-bounds Write Affecting grub2-signed package, versions *
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-UBUNTU1404-GRUB2SIGNED-5798449
- published 8 Jun 2022
- disclosed 6 Jul 2022
Introduced: 8 Jun 2022
CVE-2021-3697 Open this link in a new tabHow to fix?
There is no fixed version for Ubuntu:14.04 grub2-signed.
NVD Description
Note: Versions mentioned in the description apply only to the upstream grub2-signed package and not the grub2-signed package as distributed by Ubuntu.
See How to fix? for Ubuntu:14.04 relevant fixed versions and status.
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.