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grub2: buffer overflow when checking password entered during bootup

🗓️ 15 Dec 2015 10:01:55Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 2 Views

Grub two buffer overflow with backspace in password prompts lets console users bypass protection and gain admin access.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7ppc64grub21:2.02-0.33.el7_2grub2-1:2.02-0.33.el7_2.ppc64.rpm
Red Hat Enterprise Linux7ppc64legrub21:2.02-0.33.el7_2grub2-1:2.02-0.33.el7_2.ppc64le.rpm
Red Hat Enterprise Linux7x86_64grub21:2.02-0.33.el7_2grub2-1:2.02-0.33.el7_2.x86_64.rpm
Red Hat Enterprise Linux7ppc64grub2-debuginfo1:2.02-0.33.el7_2grub2-debuginfo-1:2.02-0.33.el7_2.ppc64.rpm
Red Hat Enterprise Linux7ppc64legrub2-debuginfo1:2.02-0.33.el7_2grub2-debuginfo-1:2.02-0.33.el7_2.ppc64le.rpm
Red Hat Enterprise Linux7x86_64grub2-debuginfo1:2.02-0.33.el7_2grub2-debuginfo-1:2.02-0.33.el7_2.x86_64.rpm
Red Hat Enterprise Linux7x86_64grub2-efi1:2.02-0.33.el7_2grub2-efi-1:2.02-0.33.el7_2.x86_64.rpm
Red Hat Enterprise Linux7x86_64grub2-efi-modules1:2.02-0.33.el7_2grub2-efi-modules-1:2.02-0.33.el7_2.x86_64.rpm
Red Hat Enterprise Linux7ppc64grub2-tools1:2.02-0.33.el7_2grub2-tools-1:2.02-0.33.el7_2.ppc64.rpm
Red Hat Enterprise Linux7ppc64legrub2-tools1:2.02-0.33.el7_2grub2-tools-1:2.02-0.33.el7_2.ppc64le.rpm
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25 Jun 2026 10:44Current
7.1High risk
Vulners AI Score7.1
CVSS 26.9
CVSS 3.17.4
EPSS0.01104
SSVC
2