Advisory Published
Updated

REDHAT-BUG-2337461

First published: Mon Jan 13 2025(Updated: )

Extra SOF0 marker in JPEG file may lead to a out-of-bounds write. An attacker may leverage this by crafting a malicious JPEG file, leading the grub's JPEG parser to fail the bounds checking in its internal buffer resulting in a out-of-bounds memory write. The possibility of overwriting sensitive information in order to bypass secure boot protections are not discarded.

Affected SoftwareAffected VersionHow to fix
Ubuntu GRUB (GNU GRand Unified Bootloader)

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Frequently Asked Questions

  • What is the severity of REDHAT-BUG-2337461?

    The severity of REDHAT-BUG-2337461 is considered critical due to the potential for an out-of-bounds write leading to memory corruption.

  • How do I fix REDHAT-BUG-2337461?

    To fix REDHAT-BUG-2337461, update GNU GRUB to the latest version where this vulnerability has been patched.

  • What types of systems are affected by REDHAT-BUG-2337461?

    Systems running GNU GRUB that handle JPEG files are affected by REDHAT-BUG-2337461.

  • What could an attacker achieve by exploiting REDHAT-BUG-2337461?

    An attacker could potentially overwrite sensitive information or execute arbitrary code through the exploitation of REDHAT-BUG-2337461.

  • Is REDHAT-BUG-2337461 related to any specific file types?

    Yes, REDHAT-BUG-2337461 is specifically related to the handling of malicious JPEG files in GNU GRUB.

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