Summaryinfo

A vulnerability was found in grub2-bhyve and classified as critical. Affected by this issue is some unknown functionality of the file grub2.cfg. The manipulation leads to buffer overflow. This vulnerability is handled as CVE-2020-10566. The attack needs to be approached locally. There is no exploit available. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Detailsinfo

A vulnerability has been found in grub2-bhyve (the affected version unknown) and classified as critical. Affected by this vulnerability is an unknown part of the file grub2.cfg. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

grub2-bhyve, as used in FreeBSD bhyve before revision 525916 2020-02-12, mishandles font loading by a guest through a grub2.cfg file, leading to a buffer overflow.

The weakness was shared 03/14/2020. This vulnerability is known as CVE-2020-10566 since 03/14/2020. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

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

The entry VDB-151608 is related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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• grub2-bhyve

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