CVE-2017-9763

NameCVE-2017-9763
DescriptionThe grub_ext2_read_block function in fs/ext2.c in GNU GRUB before 2013-11-12, as used in shlr/grub/fs/ext2.c in radare2 1.5.0, allows remote attackers to cause a denial of service (excessive stack use and application crash) via a crafted binary file, related to use of a variable-size stack array.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs869423

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
grub2 (PTS)wheezy, wheezy (security)1.99-27+deb7u3vulnerable
jessie (security), jessie2.02~beta2-22+deb8u1fixed
stretch2.02~beta3-5fixed
buster, sid2.02-2fixed
radare2 (PTS)wheezy0.9-3vulnerable
wheezy (security)0.9-3+deb7u3vulnerable
jessie0.9.6-3.1+deb8u1vulnerable
stretch1.1.0+dfsg-5vulnerable
buster, sid1.6.0+dfsg-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
grub2source(unstable)2.02~beta2-8unimportant
radare2source(unstable)(unfixed)medium869423

Notes

[stretch] - radare2 <no-dsa> (Minor issue)
[jessie] - radare2 <no-dsa> (Minor issue)
[wheezy] - radare2 <no-dsa> (Minor issue)
https://github.com/radare/radare2/commit/65000a7fd9eea62359e6d6714f17b94a99a82edd
https://github.com/radare/radare2/issues/7723
Not a security issue for Grub

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