RULE(RULE ID:712734)

Rule General Information
Release Date: 2018-08-20
Rule Name: Cisco IOS and XE Software Buffer Overflow Vulnerability (CVE-2018-0171)
Severity:
CVE ID:
Rule Protection Details
Description: A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition, or to execute arbitrary code on an affected device. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted Smart Install message to an affected device on TCP port 4786. A successful exploit could allow the attacker to cause a buffer overflow on the affected device, which could have the following impacts: triggering a reload of the device, allowing the attacker to execute arbitrary code on the device, causing an indefinite loop on the affected device that triggers a watchdog crash.
Impact: Successfully exploiting this issue may allow remote attackers to execute arbitrary code. Failed attempts will likely result in denial-of-service conditions.
Affected OS: Network Device, Solaris, FreeBSD, Windows, Mac OS, iOS, Other Unix, Linux, Others, Android
Reference: SecurityFocusBID:103538
SecurityTrackerID:1040580
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi2
https://www.darkreading.com/perimeter/attackers-exploit-cisco-switch-issue-as-vendor-warns-of-yet-another-critical-flaw/d/d-id/1331490
Solutions
The vendor advisory is available at:https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi2