Total vulnerabilities in the database
There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn't verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow.
| Software | From | Fixed in |
|---|---|---|
| gnu / grub2 | - | 2.06 |
| redhat / enterprise_linux | 7.0 | 7.0.x |
| redhat / enterprise_linux | 8.0 | 8.0.x |
| redhat / enterprise_linux_eus | 8.1 | 8.1.x |
| redhat / enterprise_linux_eus | 8.2 | 8.2.x |
| redhat / enterprise_linux_server_tus | 8.2 | 8.2.x |
| redhat / enterprise_linux_server_aus | 8.2 | 8.2.x |
| opensuse / leap | 15.1 | 15.1.x |
| opensuse / leap | 15.2 | 15.2.x |
| canonical / ubuntu_linux | 18.04 | 18.04.x |
| canonical / ubuntu_linux | 14.04 | 14.04.x |
| canonical / ubuntu_linux | 20.04 | 20.04.x |
| canonical / ubuntu_linux | 16.04 | 16.04.x |