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Vulnerability of GRUB2: integer overflow via read_section_from_string

Synthesis of the vulnerability 

An attacker can trigger an integer overflow via read_section_from_string() of GRUB2, in order to trigger a denial of service, and possibly to run code.
Vulnerable systems: Debian, Windows 10, Windows 2012, Windows 2016, Windows 2019, Windows 8, Windows RT, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu, Unix (platform) ~ not comprehensive.
Severity of this threat: 1/4.
Creation date: 30/07/2020.
Références of this weakness: ADV200011, CERTFR-2020-AVI-475, CERTFR-2020-AVI-476, CERTFR-2020-AVI-477, CERTFR-2020-AVI-485, CVE-2020-14310, DSA-4735-1, DSA-4735-2, openSUSE-SU-2020:1168-1, openSUSE-SU-2020:1169-1, RHSA-2020:3216-01, RHSA-2020:3217-01, RHSA-2020:3223-01, RHSA-2020:3227-01, RHSA-2020:3271-01, RHSA-2020:3273-01, RHSA-2020:3274-01, RHSA-2020:3275-01, RHSA-2020:3276-01, SUSE-SU-2020:14440-1, SUSE-SU-2020:2073-1, SUSE-SU-2020:2074-1, SUSE-SU-2020:2076-1, SUSE-SU-2020:2077-1, SUSE-SU-2020:2078-1, SUSE-SU-2020:2079-1, USN-4432-1, USN-4432-2, VIGILANCE-VUL-32954.

Description of the vulnerability 

An attacker can trigger an integer overflow via read_section_from_string() of GR...
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This threat alert impacts software or systems such as Debian, Windows 10, Windows 2012, Windows 2016, Windows 2019, Windows 8, Windows RT, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu, Unix (platform) ~ not comprehensive.

Our Vigil@nce team determined that the severity of this computer vulnerability bulletin is low.

The trust level is of type confirmed by the editor, with an origin of physical access.

An attacker with a expert ability can exploit this weakness note.

Solutions for this threat 

This vulnerability solution will be public soon.
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