CVE-2015-8370
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.4epss 1.1%
exploitation probability
1.1%top 36% of all CVEs
observed exploitation
nono source reports it
Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an "Off-by-two" or "Out of bounds overwrite" memory error.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
n/a · n/aReferences
http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.htmlhttp://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.htmlhttp://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.htmlhttp://rhn.redhat.com/errata/RHSA-2015-2623.html