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SUSE: CVE-2020-14309: SUSE Linux Security Advisory

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SUSE: CVE-2020-14309: SUSE Linux Security Advisory

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
07/29/2020
Created
08/01/2020
Added
07/30/2020
Modified
10/22/2021

Description

There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.

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

References

  • SUSE-SU-2020:14440-1
  • SUSE-SU-2020:2073-1
  • SUSE-SU-2020:2074-1
  • SUSE-SU-2020:2076-1
  • SUSE-SU-2020:2077-1
  • SUSE-SU-2020:2078-1
  • SUSE-SU-2020:2079-1
  • USN-4432-1
  • USN-4432-2
  • CVE-2020-14309
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