QEMU 'b/nbd/server.c' Stack Buffer Overflow Vulnerability

Bugtraq ID:	101975
Class:	Failure to Handle Exceptional Conditions
CVE:	CVE-2017-15118
Remote:	Yes
Local:	Yes
Published:	Nov 28 2017 12:00AM
Updated:	Apr 11 2018 04:00PM
Credit:	Eric Blake
Vulnerable:	Redhat Virtualization 4 Redhat Enterprise Linux 7 QEMU QEMU 0
Not Vulnerable:

QEMU 'b/nbd/server.c' Stack Buffer Overflow Vulnerability

QEMU is prone to a stack-based buffer-overflow vulnerability because it fails to adequately bounds-check user-supplied data before copying it to an insufficiently sized memory buffer.

Attackers can exploit this issue to crash the QEMU instance, resulting in a denial-of-service condition. Due to the nature of this issue, code execution may be possible but this has not been confirmed.

QEMU 'b/nbd/server.c' Stack Buffer Overflow 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].

QEMU 'b/nbd/server.c' Stack Buffer Overflow Vulnerability

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

QEMU 'b/nbd/server.c' Stack Buffer Overflow Vulnerability

References:

• QEMU Homepage (QEMU)
  
• [Qemu-devel] [PULL 2/2] nbd/server: CVE-2017-15118 Stack smash on large (gnu)
  
• CVE-2017-15118 (redhat)
  
• stack buffer overflow in NBD server triggered via long export name (redhat)