Linux Kernel up to 4.11.7 Message Queue msnd_midi.c snd_msndmidi_input_read 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 marked as critical has been reported in Linux Kernel up to 4.11.7. Affected by this vulnerability is the function snd_msndmidi_input_read of the file sound/isa/msnd/msnd_midi.c of the component Message Queue. This manipulation causes out-of-bounds. This vulnerability appears as CVE-2017-9985. The attack requires local access. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 4.11.7 (Operating System) and classified as critical. Affected by this vulnerability is the function snd_msndmidi_input_read of the file sound/isa/msnd/msnd_midi.c of the component Message Queue. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The snd_msndmidi_input_read function in sound/isa/msnd/msnd_midi.c in the Linux kernel through 4.11.7 allows local users to cause a denial of service (over-boundary access) or possibly have unspecified other impact by changing the value of a message queue head pointer between two kernel reads of that value, aka a "double fetch" vulnerability.

The bug was discovered 06/27/2017. The weakness was presented 06/28/2017 (Website). It is possible to read the advisory at bugzilla.kernel.org. This vulnerability is known as CVE-2017-9985 since 06/27/2017. Attacking locally is a requirement. A single authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 104321 (Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3469-2)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196961 (Ubuntu Security Notification for Linux, Linux-aws, Linux-gke, Linux-kvm, Linux-raspi2, Linux-snapdragon (USN-3469-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 5 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104321) and SecurityFocus (BID 99335†). See VDB-102882, VDB-107418, VDB-107763 and VDB-107938 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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: 🔍
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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: 104321
Nessus Name: Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3469-2)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for linux-lts-xenial USN-3469-2
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

06/27/2017 🔍
06/27/2017 +0 days 🔍
06/28/2017 +1 days 🔍
06/28/2017 +0 days 🔍
06/28/2017 +0 days 🔍
06/28/2017 +0 days 🔍
10/31/2017 +125 days 🔍
11/01/2017 +1 days 🔍
12/09/2022 +1864 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-3469-2
Researcher: Pengfei Wang
Status: Not defined

CVE: CVE-2017-9985 (🔍)
GCVE (CVE): GCVE-0-2017-9985
GCVE (VulDB): GCVE-100-102883
SecurityFocus: 99335 - Linux kernel CVE-2017-9985 Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 06/28/2017 16:32
Updated: 12/09/2022 11:38
Changes: 06/28/2017 16:32 (79), 10/21/2019 07:12 (5), 12/30/2020 07:03 (3), 12/09/2022 11:23 (4), 12/09/2022 11:31 (1), 12/09/2022 11:38 (1)
Complete: 🔍
Cache ID: 216::103

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