CVE-2017-13695

medium

Description

The acpi_ns_evaluate() function in drivers/acpi/acpica/nseval.c in the Linux kernel through 4.12.9 does not flush the operand cache and causes a kernel stack dump, which allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism (in the kernel through 4.9) via a crafted ACPI table.

References

http://www.securityfocus.com/bid/100497

https://github.com/acpica/acpica/pull/296/commits/37f2c716f2c6ab14c3ba557a539c3ee3224931b5

https://patchwork.kernel.org/patch/9850567/

https://usn.ubuntu.com/3696-1/

https://usn.ubuntu.com/3696-2/

https://usn.ubuntu.com/3762-1/

https://usn.ubuntu.com/3762-2/

Details

Source: MITRE

Published: 2017-08-25

Updated: 2018-09-11

Type: CWE-200

Risk Information

CVSS v2

Base Score: 2.1

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

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM