Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / grub2 | affected grub2 2.06 and lower |
CWE
CWE-122
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2112975#c0
- https://security.netapp.com/advisory/ntap-20230203-0004/
- https://security.gentoo.org/glsa/202311-14
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.