Linux Kernel up to 5.3.11 i40e_main.c i40e_setup_macvlans resource consumption

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel up to 5.3.11. Affected by this vulnerability is the function i40e_setup_macvlans of the file drivers/net/ethernet/intel/i40e/i40e_main.c. The manipulation results in resource consumption. This vulnerability is known as CVE-2019-19043. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.3.11 (Operating System). It has been classified as problematic. Affected is the function i40e_setup_macvlans of the file drivers/net/ethernet/intel/i40e/i40e_main.c. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. CVE summarizes:

A memory leak in the i40e_setup_macvlans() function in drivers/net/ethernet/intel/i40e/i40e_main.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering i40e_setup_channel() failures, aka CID-27d461333459.

The weakness was published 11/18/2019. This vulnerability is traded as CVE-2019-19043 since 11/18/2019. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 243382 (Linux Distros Unpatched Vulnerability : CVE-2019-19043), which helps to determine the existence of the flaw in a target environment.

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 vulnerability database at Tenable (243382). Similar entries are available at VDB-145864, VDB-145863, VDB-145862 and VDB-145861. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.3.0
• 5.3.1
• 5.3.2
• 5.3.3
• 5.3.4
• 5.3.5
• 5.3.6
• 5.3.7
• 5.3.8
• 5.3.9
• 5.3.10
• 5.3.11

License

• open-source

Website

• Vendor: https://www.kernel.org/

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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