CVE-2024-56738
First published: Sun Dec 29 2024(Updated: )
GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ubuntu GRUB (GNU GRand Unified Bootloader) | <2.12 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-56738?
CVE-2024-56738 is rated as a high-severity vulnerability due to its potential for facilitating side-channel attacks.
How do I fix CVE-2024-56738?
To mitigate CVE-2024-56738, update GNU GRUB to version 2.12 or later as this version implements a constant-time comparison function.
What are the risks associated with CVE-2024-56738?
CVE-2024-56738 may allow attackers to infer secrets from the system by exploiting timing discrepancies in memory comparison operations.
Which versions of GNU GRUB are affected by CVE-2024-56738?
CVE-2024-56738 affects all versions of GNU GRUB prior to version 2.12.
Is there a workaround for CVE-2024-56738 until I can update?
No official workaround is provided for CVE-2024-56738; the best practice is to update to the latest version as soon as possible.
- agent/references
- agent/first-publish-date
- agent/description
- agent/type
- agent/weakness
- agent/author
- collector/nvd-api
- source/NVD
- agent/last-modified-date
- agent/severity
- collector/mitre-cve
- source/MITRE
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/gnu
- canonical/ubuntu grub (gnu grand unified bootloader)