CVE-2023-4693

NameCVE-2023-4693
DescriptionAn out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting a high Confidentiality risk.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3605-1, DSA-5519-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
grub2 (PTS)buster2.06-3~deb10u1vulnerable
buster (security)2.06-3~deb10u4fixed
bullseye (security), bullseye2.06-3~deb11u6fixed
bookworm, bookworm (security)2.06-13+deb12u1fixed
sid, trixie2.12-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
grub2sourcebuster2.06-3~deb10u4DLA-3605-1
grub2sourcebullseye2.06-3~deb11u6DSA-5519-1
grub2sourcebookworm2.06-13+deb12u1DSA-5519-1
grub2source(unstable)2.12~rc1-11

Notes

https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html
https://lore.kernel.org/all/ZRxK8s4nQV2jBq%2F9@tomti.i.net-space.pl/

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