CVE-2022-28736

high

Description

There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.

References

https://www.openwall.com/lists/oss-security/2022/06/07/5

https://security.netapp.com/advisory/ntap-20230825-0002/

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28736

Details

Source: Mitre, NVD

Published: 2023-07-20

Updated: 2023-08-25

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High