Buffer overflow in radare2 - CVE-2017-9763
Published: June 19, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU38833
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-9763
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The 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.
Affected software
radare2
SUSE Linux Enterprise Debuginfo
SUSE Linux Enterprise Server
grub2-x86_64-efi
grub2-x86_64-xen
grub2-debuginfo
grub2-debugsource
SUSE Linux Enterprise Debuginfo
SUSE Linux Enterprise Server
grub2-x86_64-efi
grub2-x86_64-xen
grub2-debuginfo
grub2-debugsource
How to mitigate CVE-2017-9763
Install update from vendor's website.
grub2-x86_64-efi - update to 2.02-0.66.26.1
grub2-x86_64-xen - update to 2.02-0.66.26.1
grub2-debuginfo - update to 2.02-0.66.26.1
grub2-debugsource - update to 2.02-0.66.26.1
grub2-x86_64-xen - update to 2.02-0.66.26.1
grub2-debuginfo - update to 2.02-0.66.26.1
grub2-debugsource - update to 2.02-0.66.26.1