CVE-2023-4949
Published: 10 November 2023
An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition to grub-legacy in such a way to exploit a memory corruption in grub’s XFS file system implementation.
Notes
| Author | Note |
|---|---|
| eslerm | does not impact secure boot |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
grub Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of standard support)
|
| focal |
Does not exist
|
|
| jammy |
Does not exist
|
|
| lunar |
Does not exist
|
|
| mantic |
Does not exist
|
|
| noble |
Does not exist
|
|
| trusty |
Not vulnerable
(does not affect Secure Boot)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(does not affect Secure Boot)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.7 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | High |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |