CVE-2017-1000364

Public on 2017-06-19
Modified on 2017-06-19
Description
A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap (or different memory region) and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory corruption on process stack or the adjacent memory region, and thus increase their privileges on the system. This is a kernel-side mitigation which increases the stack guard gap size from one page to 1 MiB to make successful exploitation of this issue more difficult.
Severity
Important
CVSS v3 Base Score
7.4
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2017-06-19 08:58 ALAS-2017-845

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv2 6.2 AV:L/AC:H/Au:N/C:C/I:C/A:C
Amazon Linux CVSSv3 7.4 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv2 6.2 AV:L/AC:H/Au:N/C:C/I:C/A:C
NVD CVSSv3 7.4 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H