GNU GRUB CVE-2017-9763 Remote Denial Of Service Vulnerability

Bugtraq ID:	99141
Class:	Failure to Handle Exceptional Conditions
CVE:	CVE-2017-9763
Remote:	Yes
Local:	No
Published:	Jun 19 2017 12:00AM
Updated:	Jun 19 2017 12:00AM
Credit:	Kamil Frankowicz (fumfel)
Vulnerable:	GNU GRUB -
Not Vulnerable:

GNU GRUB CVE-2017-9763 Remote Denial Of Service Vulnerability

GNU GRUB is prone to a remote denial-of-service vulnerability.

An attacker can exploit this issue to crash the affected application, resulting in denial-of-service condition.

GNU GRUB CVE-2017-9763 Remote Denial Of Service Vulnerability

Currently, we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

GNU GRUB CVE-2017-9763 Remote Denial Of Service Vulnerability

Solution:
Updates are available. Please see the references or vendor advisory for more information.

GNU GRUB CVE-2017-9763 Remote Denial Of Service Vulnerability

References:

• Fix #7723 - crash in ext2 GRUB code because of variable size array (radare2)
  
• GRUB (GNU)
  
• grub-core/fs/ext2.c: Remove variable length arrays. (GNU)
  
• SIGSEGV (Too large variable on stack) in grub_ext2_read_block() (radare2)