Linux Kernel up to 4.13.3 sound/core/seq_device.c use after free

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.
5.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 4.13.3. Affected by this vulnerability is an unknown functionality of the file sound/core/seq_device.c. Performing a manipulation results in use after free. This vulnerability is identified as CVE-2017-16528. The attack is only possible with local access. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.13.3 (Operating System). It has been classified as critical. This affects an unknown functionality of the file sound/core/seq_device.c. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

sound/core/seq_device.c in the Linux kernel before 4.13.4 allows local users to cause a denial of service (snd_rawmidi_dev_seq_free use-after-free and system crash) or possibly have unspecified other impact via crafted system calls.

The bug was discovered 09/12/2017. The weakness was released 11/04/2017 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2017-16528 since 11/03/2017. Attacking locally is a requirement. The successful exploitation needs a authentication. 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 52 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105364 (openSUSE Security Update : the Linux Kernel (openSUSE-2017-1391) (Dirty COW)), 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 276995 (Fedora Security Update for kernel (FEDORA-2017-31d7720d7e)).

Upgrading to version 4.13.4 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 (105364). Entries connected to this vulnerability are available at VDB-109128, VDB-109129, VDB-109130 and VDB-109132. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

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

NVD Base Score: 6.6
NVD Vector: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 105364
Nessus Name: openSUSE Security Update : the Linux Kernel (openSUSE-2017-1391) (Dirty COW)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 862920
OpenVAS Name: SuSE Update for Linux Kernel openSUSE-SU-2017:3359-1 (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: 🔍

Upgrade: Kernel 4.13.4
Patch: github.com

Timelineinfo

09/12/2017 🔍
11/03/2017 +52 days 🔍
11/03/2017 +0 days 🔍
11/04/2017 +1 days 🔍
11/04/2017 +0 days 🔍
12/18/2017 +44 days 🔍
12/19/2017 +1 days 🔍
01/06/2023 +1844 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: fc27fe7e8deef2f37cba3f2be2d52b6ca5eb9d57
Status: Not defined

CVE: CVE-2017-16528 (🔍)
GCVE (CVE): GCVE-0-2017-16528
GCVE (VulDB): GCVE-100-109131
See also: 🔍

Entryinfo

Created: 11/04/2017 16:26
Updated: 01/06/2023 11:14
Changes: 11/04/2017 16:26 (77), 12/04/2019 14:43 (2), 01/06/2023 11:06 (5), 01/06/2023 11:14 (1)
Complete: 🔍
Cache ID: 216:200:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you know our Splunk app?

Download it now for free!