Linux Kernel up to 4.12.9 Operand Cache dsutils.c acpi_ds_create_operands ACPI Table information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 4.12.9. The affected element is the function acpi_ds_create_operands of the file drivers/acpi/acpica/dsutils.c of the component Operand Cache. This manipulation as part of ACPI Table causes information disclosure. This vulnerability is tracked as CVE-2017-13693. The attack is restricted to local execution. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 4.12.9 (Operating System) and classified as critical. Affected by this vulnerability is the function acpi_ds_create_operands of the file drivers/acpi/acpica/dsutils.c of the component Operand Cache. The manipulation as part of a ACPI Table leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The acpi_ds_create_operands() function in drivers/acpi/acpica/dsutils.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 disclosed 08/25/2017 (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is known as CVE-2017-13693 since 08/25/2017. Attacking locally is a requirement. Required for exploitation is a single authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

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 276924 (Fedora Security Update for kernel (FEDORA-2017-6764d16965)).

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 100502†). The entries VDB-105728, VDB-105729 and VDB-106021 are pretty similar. Be aware that VulDB is the high quality source for 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: 5.4

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

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp 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

EPSS Score: 🔍
EPSS Percentile: 🔍

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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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

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 🔍
12/18/2024 +2654 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: securityfocus.com⛔
Status: Confirmed

CVE: CVE-2017-13693 (🔍)
GCVE (CVE): GCVE-0-2017-13693
GCVE (VulDB): GCVE-100-105727
SecurityFocus: 100502 - Linux Kernel 'drivers/acpi/acpica/dsutils.c' Local Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 08/25/2017 22:04
Updated: 12/18/2024 21:32
Changes: 08/25/2017 22:04 (73), 11/10/2019 09:53 (11), 12/16/2022 14:59 (4), 12/18/2024 21:32 (26)
Complete: 🔍
Cache ID: 216::103

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