Non notée
CVE-2021-3695 A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area
Description
A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| grub2 | Versions non publiées |
Autres CVE de grub2
Les 14 CVE de grub2 →
CVE-2022-3775
When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and…
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CVE-2022-2601
A buffer overflow was found in grub_font_construct_glyph()
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CVE-2021-3697
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written…
Non notée
CVE-2021-3696
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader
Non notée