CVE-2020-14308

MEDIUM

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.

References

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/

Details

Source: MITRE

Published: 2020-07-29

Updated: 2020-08-08

Type: CWE-190

Risk Information

CVSS v2.0

Base Score: 4.4

Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3.0

Base Score: 6.4

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

Impact Score: 5.9

Exploitability Score: 0.5

Severity: MEDIUM