CVE-2018-0156
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. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted packet to an affected device on TCP port 4786. Only Smart Install client switches are affected. Cisco devices that are configured as a Smart Install director are not affected by this vulnerability. Cisco Bug IDs: CSCvd40673.
How to fix
Apply updates per vendor instructions.
CISA due date: Mar 17, 2022Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco ios | 15.2\(2\)e4, 15.2\(2a\)ja | — |
| cisco ios_xe | 15.2\(2\)e4, 15.2\(2a\)ja | — |
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