CVE-2018-0171

CVE-2018-0171 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021. EIP tracks 2 public exploits from researchers including embedi, AlrikRr. A Nuclei detection template is also available.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in Cisco Smart Install Client (CVE-2018-0171) by sending a crafted packet with a malicious payload. The PoC attempts to trigger a buffer overflow via a malformed TLV structure, potentially leading to remote code execution.

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. Cisco Bug IDs: CSCvg76186.