Linux Kernel 4.15 /dev/snd/seq memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

A vulnerability was found in Linux Kernel 4.15 (Operating System) and classified as problematic. This issue affects an unknown functionality of the file /dev/snd/seq. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The Linux kernel 4.15 has a Buffer Overflow via an SNDRV_SEQ_IOCTL_SET_CLIENT_POOL ioctl write operation to /dev/snd/seq by a local user.

The bug was discovered 02/14/2018. The weakness was disclosed 03/30/2018 (Website). The advisory is shared at mailman.alsa-project.org. The identification of this vulnerability is CVE-2018-7566 since 02/28/2018. An attack has to be approached locally. The successful exploitation needs a simple authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 44 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 109254 (SUSE SLES12 Security Update : kernel (SUSE-SU-2018:1005-1)), 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 157825 (Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2018-4250)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (109254). The entries 111926 and 114713 are pretty similar.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 109254
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2018:1005-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 860857
OpenVAS Name: Ubuntu Update for linux-aws USN-3631-2
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

02/14/2018 🔍
02/14/2018 +0 days 🔍
02/28/2018 +14 days 🔍
03/30/2018 +30 days 🔍
03/30/2018 +0 days 🔍
03/31/2018 +1 days 🔍
04/20/2018 +20 days 🔍
04/23/2018 +3 days 🔍
02/24/2023 +1768 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2018:2384
Researcher: long7573@126.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-7566 (🔍)
OVAL: 🔍

SecurityFocus: 103605 - Linux Kernel 'snd_seq_write()' Function Local Buffer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 03/31/2018 09:51
Updated: 02/24/2023 17:03
Changes: 03/31/2018 09:51 (78), 01/18/2020 15:21 (5), 02/06/2021 15:53 (2), 02/24/2023 17:03 (4)
Complete: 🔍

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