CVE-2021-20225
Medium
Description
A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
SeverityMedium
CVSS6.7
Exploit probability—
Product
Gnu Grub2
PublishedMar 3, 2021
First seenMar 3, 2021
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- gnu grub22.06 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnu grub2 | v < 2.06 | 2.06 |
| redhat enterprise_linux | 7.0, 8.0 | — |
| redhat enterprise_linux_server_aus | 7.2, 7.3, 7.4, 7.6, 7.7, 8.2 | — |
| redhat enterprise_linux_server_eus | 7.6, 7.7, 8.1 | — |
| redhat enterprise_linux_server_tus | 7.4, 7.6, 7.7, 8.2 | — |
| redhat enterprise_linux_workstation | 7.0 | — |
| fedoraproject fedora | 33, 34 | — |
| netapp ontap_select_deploy_administration_utility | No range specified | — |
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