CVE-2017-3853: Buffer Overflow
A vulnerability in the Data-in-Motion (DMo) process installed with the Cisco IOx application environment could allow an unauthenticated, remote attacker to cause a stack overflow that could allow remote code execution with root privileges in the virtual instance running on an affected device. The vulnerability is due to insufficient bounds checking in the DMo process. An attacker could exploit this vulnerability by sending crafted packets that are forwarded to the DMo process for evaluation. The impacts of a successful exploit are limited to the scope of the virtual instance and do not impact the router that is hosting Cisco IOx. This vulnerability affects the following Cisco 800 Series Industrial Integrated Services Routers: Cisco IR809 and Cisco IR829. Cisco IOx Releases 1.0.0.0 and 1.1.0.0 are vulnerable. Cisco Bug IDs: CSCuy52330.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Cisco IOx application environment (DMo process)to a version that resolves this vulnerability.Fixed in 1.0.0.0 - Upgrade
Upgrade
Cisco IOx application environment (DMo process)to a version that resolves this vulnerability.Fixed in 1.1.0.0 - Compensating control
Mitigate exposure by preventing unauthenticated remote attackers from sending crafted packets that are forwarded to the DMo process for evaluation (e.g., restrict/deny inbound network access to the virtual instance/ports used to reach Cisco IOx DM processes on affected Cisco IR809 and IR829 devices).
Event History
Frequently Asked Questions
What is the severity of CVE-2017-3853?
CVE-2017-3853 is classified as having a high severity due to its potential for remote code execution under certain conditions.
What devices are affected by CVE-2017-3853?
CVE-2017-3853 affects devices running Cisco IOx version 1.1(0) and 1.1.0.
How do I fix CVE-2017-3853?
To fix CVE-2017-3853, update to the patched version of Cisco IOx as advised in Cisco's security advisory.
Can CVE-2017-3853 be exploited remotely?
Yes, CVE-2017-3853 can be exploited remotely by an unauthenticated attacker to execute code.
What potential impact does CVE-2017-3853 have on my system?
The impact of CVE-2017-3853 may include unauthorized execution of code with root privileges, potentially compromising the system.