When reading data from a hfs filesystem, grub's hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the internal buffers size, however it misses to properly check for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculation to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result the hfsplus_open_compressed_real() function will write past of the internal buffer length. This flaw may be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution by-passing secure boot protections.
Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.
| Fabricante | Producto | Versiones | |
|---|---|---|---|
| gnu | grub2 | ≤ 2.12 | |
| Red Hat | Red Hat Enterprise Linux 10 | — | |
| Red Hat | Red Hat Enterprise Linux 7 | — | |
| Red Hat | Red Hat Enterprise Linux 8 | — | |
| Red Hat | Red Hat Enterprise Linux 9 | — | |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | |
| — | grub2 | ≤ 2.12 |
cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* ≤ 2.12Nuestro sensor honeypot gratuito y de código abierto espera en puertos que su servidor no usa y reporta a una lista compartida los escáneres y atacantes que se conectan.