Heap-based Buffer Overflow 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-5781332
- published 16 Nov 2022
- disclosed 14 Dec 2022
Introduced: 16 Nov 2022
CVE-2022-2601 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 buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.