Linux Kernel up to 4.10.14 saa7164-bus.c saa7164_bus_get out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 4.10.14. This vulnerability affects the function saa7164_bus_get of the file drivers/media/pci/saa7164/saa7164-bus.c. Such manipulation leads to out-of-bounds. This vulnerability is listed as CVE-2017-8831. The attack must be carried out locally. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 4.10.14 (Operating System). Affected by this issue is the function saa7164_bus_get of the file drivers/media/pci/saa7164/saa7164-bus.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The saa7164_bus_get function in drivers/media/pci/saa7164/saa7164-bus.c in the Linux kernel through 4.10.14 allows local users to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact by changing a certain sequence-number value, aka a "double fetch" vulnerability.

The bug was discovered 04/24/2017. The weakness was presented 05/08/2017 as Bug 195559 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.kernel.org. This vulnerability is handled as CVE-2017-8831 since 05/07/2017. The attack needs to be approached locally. A simple authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 14 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 102509 (openSUSE Security Update : the Linux Kernel (openSUSE-2017-929)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170278 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2017:2286-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (102509) and SecurityFocus (BID 99619†). seclists.org is providing further details. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
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: 102509
Nessus Name: openSUSE Security Update : the Linux Kernel (openSUSE-2017-929)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for Linux Kernel openSUSE-SU-2017:2171-1 (Linux Kernel)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: github.com

Timelineinfo

04/24/2017 🔍
05/07/2017 +13 days 🔍
05/08/2017 +1 days 🔍
05/08/2017 +0 days 🔍
05/08/2017 +0 days 🔍
05/08/2017 +0 days 🔍
08/15/2017 +99 days 🔍
08/16/2017 +1 days 🔍
12/06/2022 +1938 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 195559
Researcher: Pengfei Wang
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-8831 (🔍)
GCVE (CVE): GCVE-0-2017-8831
GCVE (VulDB): GCVE-100-100928
SecurityFocus: 99619 - Linux kernel CVE-2017-8831 Local Denial of Service Vulnerability

Misc.: 🔍

Entryinfo

Created: 05/08/2017 17:13
Updated: 12/06/2022 08:16
Changes: 05/08/2017 17:13 (80), 10/25/2019 20:23 (6), 12/22/2020 14:18 (3), 12/06/2022 08:16 (3)
Complete: 🔍
Cache ID: 216::103

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