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Exploits
ID:8154 - Exploit for Out-of-bounds write in grub - CVE-2021-20233
ID:8154 - Exploit for Out-of-bounds write in grub - CVE-2021-20233
Published: July 20, 2022
Vulnerability identifier: #VU51198
Vulnerability risk: Low
CVE-ID: CVE-2021-20233
CWE-ID: CWE-787
Exploitation vector: Local access
Vulnerable software:
grub
grub
Link to public exploit:
Vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the setparam_prefix() function in menu rendering code. A local privileged user can run a specially crafted program to trigger out-of-bounds write and escalate privileges on the system.
Remediation
Install updates from vendor's website.