Vulnerability CVE-2017-13694

Vulnerability Name:

CVE-2017-13694 (CCN-131023)

Assigned:

2017-08-25

Published:

2017-08-25

Updated:

2017-09-20

Summary:

The acpi_ps_complete_final_op() function in drivers/acpi/acpica/psobject.c in the Linux kernel through 4.12.9 does not flush the node and node_ext caches 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.

CVSS v3 Severity:

5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): None Availibility (A): None

CVSS v2 Severity:

2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

Vulnerability Type:

CWE-200

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2017-13694

Source: BID
Type: Third Party Advisory, VDB Entry
100500

Source: CCN
Type: BID-100500
Linux Kernel 'drivers/acpi/acpica/psobject.c' Local Information Disclosure Vulnerability

Source: XF
Type: UNKNOWN
linux-kernel-cve201713694-info-disc(131023)

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://github.com/acpica/acpica/pull/278/commits/4a0243ecb4c94e2d73510d096c5ea4d0711fc6c0

Source: CCN
Type: Patchwork Web site
acpi: acpica: fix acpi parse and parseext cache leaks

Source: MISC
Type: Patch, Third Party Advisory
https://patchwork.kernel.org/patch/9806085/

Source: CCN
Type: Linux Kernel Web site
The Linux Kernel Archives

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-13694

Vulnerable Configuration:

Configuration 1:

cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version <= 4.12.9)

Configuration CCN 1:

cpe:/o:linux:linux_kernel:4.12.9:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.xenial:def:2017136940000000	V	CVE-2017-13694 on Ubuntu 16.04 LTS (xenial) - negligible.	2017-08-25
oval:com.ubuntu.artful:def:201713694000	V	CVE-2017-13694 on Ubuntu 17.10 (artful) - negligible.	2017-08-25
oval:com.ubuntu.xenial:def:201713694000	V	CVE-2017-13694 on Ubuntu 16.04 LTS (xenial) - negligible.	2017-08-25
oval:com.ubuntu.disco:def:2017136940000000	V	CVE-2017-13694 on Ubuntu 19.04 (disco) - negligible.	2017-08-25
oval:com.ubuntu.bionic:def:201713694000	V	CVE-2017-13694 on Ubuntu 18.04 LTS (bionic) - negligible.	2017-08-25
oval:com.ubuntu.cosmic:def:2017136940000000	V	CVE-2017-13694 on Ubuntu 18.10 (cosmic) - negligible.	2017-08-25
oval:com.ubuntu.cosmic:def:201713694000	V	CVE-2017-13694 on Ubuntu 18.10 (cosmic) - negligible.	2017-08-25
oval:com.ubuntu.bionic:def:2017136940000000	V	CVE-2017-13694 on Ubuntu 18.04 LTS (bionic) - negligible.	2017-08-25
oval:com.ubuntu.trusty:def:201713694000	V	CVE-2017-13694 on Ubuntu 14.04 LTS (trusty) - negligible.	2017-08-25

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