Oracle Linux: (CVE-2020-14310) (Multiple Advisories): grub2 security update
Description
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.
Solution(s)
- oracle-linux-upgrade-grub2
- oracle-linux-upgrade-grub2-common
- oracle-linux-upgrade-grub2-efi-aa64
- oracle-linux-upgrade-grub2-efi-aa64-cdboot
- oracle-linux-upgrade-grub2-efi-aa64-modules
- oracle-linux-upgrade-grub2-efi-ia32
- oracle-linux-upgrade-grub2-efi-ia32-cdboot
- oracle-linux-upgrade-grub2-efi-ia32-modules
- oracle-linux-upgrade-grub2-efi-x64
- oracle-linux-upgrade-grub2-efi-x64-cdboot
- oracle-linux-upgrade-grub2-efi-x64-modules
- oracle-linux-upgrade-grub2-pc
- oracle-linux-upgrade-grub2-pc-modules
- oracle-linux-upgrade-grub2-tools
- oracle-linux-upgrade-grub2-tools-efi
- oracle-linux-upgrade-grub2-tools-extra
- oracle-linux-upgrade-grub2-tools-minimal
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