ARM mbed TLS CVE-2017-18187 Integer Overflow Vulnerability

Bugtraq ID:	103055
Class:	Boundary Condition Error
CVE:	CVE-2017-18187
Remote:	Yes
Local:	No
Published:	Feb 14 2018 12:00AM
Updated:	Feb 14 2018 12:00AM
Credit:	The vendor reported this issue.
Vulnerable:	ARM mbed TLS 2.6.1 ARM mbed TLS 2.6
Not Vulnerable:	ARM mbed TLS 2.7

ARM mbed TLS CVE-2017-18187 Integer Overflow Vulnerability

ARM mbed TLS is prone to an integer 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 execute arbitrary code in the context of the affected application. Failed exploit attempts will likely cause denial-of-service conditions.

Versions prior to ARM mbed TLS 2.7.0 are vulnerable.

ARM mbed TLS CVE-2017-18187 Integer 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].

ARM mbed TLS CVE-2017-18187 Integer Overflow Vulnerability

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

ARM mbed TLS CVE-2017-18187 Integer Overflow Vulnerability

References:

• mbed TLS Homepage (ARM)
  
• Prevent bounds check bypass through overflow in PSK identity parsing (Github)