Linux Kernel mwifiex Kernel memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$5k-$25k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel and classified as critical. This issue affects some unknown processing of the component mwifiex Kernel Module. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2019-3846. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (the affected version unknown) and classified as critical. This issue affects an unknown part of the component mwifiex Kernel Module. 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:

A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network.

The weakness was disclosed 06/03/2019 as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2019-3846 since 01/03/2019. The exploitation is known to be difficult. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/15/2024).

The vulnerability scanner Nessus provides a plugin with the ID 208574 (CentOS 7 : kernel-alt (RHSA-2020:0174)), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176983 (Debian Security Update for linux (DSA 4465-1) (Sad SACK)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (208574) and SecurityFocus (BID 108286†). The entries VDB-135068 and VDB-136509 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.2

VulDB Base Score: 4.9
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.0
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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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: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 208574
Nessus Name: CentOS 7 : kernel-alt (RHSA-2020:0174)

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/03/2019 🔍
05/07/2019 +124 days 🔍
06/03/2019 +27 days 🔍
06/04/2019 +1 days 🔍
10/15/2024 +1960 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2019:2703
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-3846 (🔍)
GCVE (CVE): GCVE-0-2019-3846
GCVE (VulDB): GCVE-100-135887
SecurityFocus: 108286 - Linux Kernel CVE-2019-11810 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 06/04/2019 12:26
Updated: 10/15/2024 17:40
Changes: 06/04/2019 12:26 (61), 06/18/2020 20:21 (3), 09/26/2023 13:55 (3), 09/26/2023 14:01 (12), 10/15/2024 17:40 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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