Linux Kernel up to 5.3.11 ipmi_msghandler.c __ipmi_bmc_register resource consumption ⚔ [Disputed]

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel up to 5.3.11. This vulnerability affects the function __ipmi_bmc_register of the file drivers/char/ipmi/ipmi_msghandler.c. Performing a manipulation results in resource consumption. This vulnerability was named CVE-2019-19046. The attack may be initiated remotely. There is no available exploit. There are still doubts about whether this vulnerability truly exists.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 5.3.11 (Operating System). This affects the function __ipmi_bmc_register of the file drivers/char/ipmi/ipmi_msghandler.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. The summary by CVE is:

A memory leak in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering ida_simple_get() failure, aka CID-4aa7afb0ee20.

The weakness was presented 11/18/2019. This vulnerability is uniquely identified as CVE-2019-19046 since 11/18/2019. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The real existence of this vulnerability is still doubted at the moment. The vulnerability scanner Nessus provides a plugin with the ID 208602 (CentOS 7 : kernel-alt (RHSA-2020:3545)), 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 (208602). See VDB-145867, VDB-145866, VDB-145865 and VDB-145864 for similar entries. Be aware that VulDB is the high quality 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

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