Linux Kernel 4.15.0 ntfs.ko Filesystem Driver ntfs_attr_find out-of-bounds write

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel 4.15.0. This impacts the function ntfs_attr_find of the component ntfs.ko Filesystem Driver. Such manipulation leads to out-of-bounds write. This vulnerability is traded as CVE-2018-12931. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel 4.15.0 (Operating System) and classified as critical. Affected by this issue is the function ntfs_attr_find of the component ntfs.ko Filesystem Driver. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

ntfs_attr_find in the ntfs.ko filesystem driver in the Linux kernel 4.15.0 allows attackers to trigger a stack-based out-of-bounds write and cause a denial of service (kernel oops or panic) or possibly have unspecified other impact via a crafted ntfs filesystem.

The bug was discovered 04/12/2018. The weakness was shared 06/28/2018 by arma (Website). The advisory is available at securityfocus.com. This vulnerability is handled as CVE-2018-12931 since 06/28/2018. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/29/2023).

The vulnerability was handled as a non-public zero-day exploit for at least 77 days. During that time the estimated underground price was around $0-$5k.

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 SecurityFocus (BID 104588†). The entries VDB-120072 and VDB-120073 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.15.0

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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