Linux Kernel up to 4.12.9 Operand Cache nseval.c acpi_ns_evaluate ACPI Table information disclosure

CVSS Meta Temp Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 4.12.9. This affects the function acpi_ns_evaluate of the file drivers/acpi/acpica/nseval.c of the component Operand Cache. Performing a manipulation as part of ACPI Table results in information disclosure. This vulnerability is cataloged as CVE-2017-13695. The attack must be initiated from a local position. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.12.9 (Operating System). It has been classified as critical. This affects the function acpi_ns_evaluate of the file drivers/acpi/acpica/nseval.c of the component Operand Cache. The manipulation as part of a ACPI Table leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The bug was discovered 08/25/2017. The weakness was shared 08/25/2017 (Website). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2017-13695 since 08/25/2017. An attack has to be approached locally. The successful exploitation needs a authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 103117 (Fedora 26 : kernel (2017-6764d16965)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157820 (Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2018-4245)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103117) and SecurityFocus (BID 100497†). The entries VDB-105727, VDB-105728, VDB-106021 and VDB-113848 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103117
Nessus Name: Fedora 26 : kernel (2017-6764d16965)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for kernel FEDORA-2017-a3a8638a60
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: github.com

Timelineinfo

08/25/2017 🔍
08/25/2017 +0 days 🔍
08/25/2017 +0 days 🔍
08/25/2017 +0 days 🔍
08/25/2017 +0 days 🔍
08/25/2017 +0 days 🔍
09/11/2017 +17 days 🔍
09/12/2017 +1 days 🔍
12/16/2022 +1921 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2017-6764d16965⛔
Researcher: Seunghun Han
Status: Confirmed

CVE: CVE-2017-13695 (🔍)
GCVE (CVE): GCVE-0-2017-13695
GCVE (VulDB): GCVE-100-105729
SecurityFocus: 100497 - Linux Kernel 'drivers/acpi/acpica/nseval.c' Local Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 08/25/2017 22:04
Updated: 12/16/2022 15:10
Changes: 08/25/2017 22:04 (73), 11/10/2019 10:06 (11), 01/09/2021 20:28 (3), 12/16/2022 15:05 (4), 12/16/2022 15:10 (1)
Complete: 🔍
Cache ID: 216:65E:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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