Linux Kernel up to 4.6 ALSA Timer Interface sound/core/timer.c snd_timer_user_params information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 4.6. This issue affects the function snd_timer_user_params of the file sound/core/timer.c of the component ALSA Timer Interface. Such manipulation leads to information disclosure. This vulnerability is listed as CVE-2016-4569. The attack must be carried out locally. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 4.6 (Operating System). Affected by this issue is the function snd_timer_user_params of the file sound/core/timer.c of the component ALSA Timer Interface. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The snd_timer_user_params function in sound/core/timer.c in the Linux kernel through 4.6 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory via crafted use of the ALSA timer interface.

The weakness was presented 05/23/2016 (Website). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2016-4569 since 05/09/2016. The exploitation is known to be easy. The attack needs to be approached locally. A simple authentication is necessary for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 91875 (Ubuntu 16.04 LTS : linux-snapdragon vulnerabilities (USN-3016-3)), 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 168927 (OpenSuSE Security Update for the Linux Kernel (openSUSE-SU-2016:1641-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (91875) and SecurityFocus (BID 90347†). See VDB-83139, VDB-87126, VDB-87304 and VDB-87611 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

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: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 91875
Nessus Name: Ubuntu 16.04 LTS : linux-snapdragon vulnerabilities (USN-3016-3)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800225
OpenVAS Name: Ubuntu Update for linux-lts-wily USN-3017-3
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: git.kernel.org

Timelineinfo

05/08/2016 🔍
05/09/2016 +1 days 🔍
05/23/2016 +14 days 🔍
05/23/2016 +0 days 🔍
05/24/2016 +1 days 🔍
06/27/2016 +34 days 🔍
06/28/2016 +1 days 🔍
08/22/2022 +2246 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-3016-3
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-4569 (🔍)
GCVE (CVE): GCVE-0-2016-4569
GCVE (VulDB): GCVE-100-87608

OVAL: 🔍

SecurityFocus: 90347 - Linux Kernel 'sound/core/timer.c' Local Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 05/24/2016 11:56
Updated: 08/22/2022 09:05
Changes: 05/24/2016 11:56 (59), 12/12/2018 10:12 (24), 08/22/2022 08:59 (4), 08/22/2022 09:02 (1), 08/22/2022 09:05 (1)
Complete: 🔍
Cache ID: 216:567:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!