REDHAT-BUG-2346122: Buffer Overflow
When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2346122?
The severity of REDHAT-BUG-2346122 is rated as medium, with a score of 4.
What is the description of REDHAT-BUG-2346122?
REDHAT-BUG-2346122 describes a buffer overflow vulnerability in the grub's UDF filesystem module that can occur during disk data reading.
How do I fix REDHAT-BUG-2346122?
To fix REDHAT-BUG-2346122, you should update your GNU GRUB software to the latest version that has patched this vulnerability.
What impact does REDHAT-BUG-2346122 pose?
The impact of REDHAT-BUG-2346122 includes potential data corruption or arbitrary code execution due to buffer overflow.
Is there a risk of exploitation for REDHAT-BUG-2346122?
Yes, there is a risk of exploitation for REDHAT-BUG-2346122 if a malicious user can manipulate the length of data read by grub's UDF filesystem module.