CVE-2020-14308 Information

Description

In grub2 versions before 2.06 the grub memory allocator doesn’t check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity confidentiality and availability impacts during the boot process.

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html http://www.openwall.com/lists/oss-security/2020/07/29/3 https://bugzilla.redhat.com/show_bug.cgi?id=1852009 https://security.netapp.com/advisory/ntap-20200731-0008/ https://usn.ubuntu.com/4432-1/

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

6.4