Linux Kernel up to 3.x/4.17.x Marvell Wifi Chip Driver heap-based overflow

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 3.x/4.17.x. Affected by this issue is some unknown functionality of the component Marvell Wifi Chip Driver. This manipulation causes heap-based overflow. This vulnerability is handled as CVE-2019-14895. The attack can only be done within the local network. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 3.x/4.17.x (Operating System). Affected by this vulnerability is an unknown code of the component Marvell Wifi Chip Driver. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A heap-based buffer overflow was discovered in the Linux kernel, all versions 3.x.x and 4.x.x before 4.18.0, in Marvell WiFi chip driver. The flaw could occur when the station attempts a connection negotiation during the handling of the remote devices country settings. This could allow the remote device to cause a denial of service (system crash) or possibly execute arbitrary code.

The weakness was released 11/29/2019 (Website). The advisory is shared at lists.fedoraproject.org. This vulnerability is known as CVE-2019-14895 since 08/10/2019. The attack needs to be initiated within the local network. A single authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 208557 (CentOS 7 : kernel-alt (RHSA-2020:1493)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.18.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (208557). Entries connected to this vulnerability are available at VDB-146522 and VDB-146523. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 3.x
• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12
• 4.13
• 4.14
• 4.15
• 4.16
• 4.17

License

• open-source

Website

• Vendor: https://www.kernel.org/

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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