Linux Kernel up to 4.6 ALSA Timer Interface sound/core/timer.c snd_timer_user_params information disclosure
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.5 | $0-$5k | 0.00 |
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 vulnerability database at Tenable (91875). See 83139, 87126, 87304 and 87611 for similar entries.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.7VulDB 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: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Information disclosureCWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Patch: git.kernel.org
Timeline
05/08/2016 🔍05/09/2016 🔍
05/23/2016 🔍
05/23/2016 🔍
05/24/2016 🔍
06/27/2016 🔍
06/28/2016 🔍
08/22/2022 🔍
Sources
Vendor: kernel.orgAdvisory: USN-3016-3
Status: Not defined
Confirmation: 🔍
CVE: CVE-2016-4569 (🔍)
OVAL: 🔍
SecurityFocus: 90347 - Linux Kernel 'sound/core/timer.c' Local Information Disclosure Vulnerability
See also: 🔍
Entry
Created: 05/24/2016 11:56Updated: 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: 🔍
No comments yet. Languages: en.
Please log in to comment.