SUSE: CVE-2020-14310: SUSE Linux Security Advisory
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)
- suse-upgrade-grub2
- suse-upgrade-grub2-arm64-efi
- suse-upgrade-grub2-branding-upstream
- suse-upgrade-grub2-i386-efi
- suse-upgrade-grub2-i386-efi-debug
- suse-upgrade-grub2-i386-pc
- suse-upgrade-grub2-i386-pc-debug
- suse-upgrade-grub2-i386-xen
- suse-upgrade-grub2-powerpc-ieee1275
- suse-upgrade-grub2-s390x-emu
- suse-upgrade-grub2-snapper-plugin
- suse-upgrade-grub2-systemd-sleep-plugin
- suse-upgrade-grub2-x86_64-efi
- suse-upgrade-grub2-x86_64-efi-debug
- suse-upgrade-grub2-x86_64-xen
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