CVE-2015-8370
grub2 - security update
7.4
HIGH
CVSS 3.1
EPSS 4.7%
Description
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.
How to fix CVE-2015-8370
To remediate CVE-2015-8370, upgrade the affected package to a fixed version below.
- —upgrade to 2.02~beta2-33 or later
- —upgrade to 1.98+20100804-14+squeeze2 or later
- —upgrade to 1.99-27+deb7u3 or later
Is CVE-2015-8370 being exploited?
Low — EPSS is 4.7%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.02~beta2-33
- from 0, < 1.98+20100804-14+squeeze2
- from 0, < 1.99-27+deb7u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.4 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |