REDHAT-BUG-2346123
First published: Mon Feb 17 2025(Updated: )
The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it's possible to make this variable to overflow leading to a out-of-bounds write in the heap based buffer. This flaw may be leveraged to corrupt grub's internal critical data and secure boot bypass is not discarded as consequence.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ubuntu GRUB (GNU GRand Unified Bootloader) |
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Reference Links
Frequently Asked Questions
What is the severity of REDHAT-BUG-2346123?
The severity of REDHAT-BUG-2346123 is considered high due to potential buffer overflow vulnerabilities.
How do I fix REDHAT-BUG-2346123?
To fix REDHAT-BUG-2346123, update to the latest version of GNU GRUB that addresses the buffer overflow issue.
What types of systems are impacted by REDHAT-BUG-2346123?
REDHAT-BUG-2346123 affects systems utilizing GNU GRUB for boot management.
Can REDHAT-BUG-2346123 be exploited remotely?
Yes, REDHAT-BUG-2346123 can potentially be exploited remotely if an attacker has control over the boot process.
Is there a workaround for REDHAT-BUG-2346123?
A workaround for REDHAT-BUG-2346123 may involve restricting access to the GRUB bootloader settings to trusted users only.
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2025-0690
- agent/severity
- agent/references
- agent/type
- agent/description
- agent/last-modified-date
- agent/source
- agent/first-publish-date
- agent/event
- agent/softwarecombine
- agent/tags
- agent/guess-ai
- agent/software-canonical-lookup
- vendor/gnu
- canonical/ubuntu grub (gnu grand unified bootloader)