CVE-2018-0485 Cisco IOS and IOS XE Software SM-1T3/E3 Service Module Denial of Service Vulnerability

High 8.6 Published 5 Oct 2018 Updated 26 Nov 2024

Remote attackers can cause a denial of service on Cisco ISR routers by sending specific input to the SM-1T3/E3 module console.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-0485?

CVE-2018-0485 is a high-severity denial of service vulnerability in Cisco Ios, published on 5 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the SM-1T3/E3 firmware on Cisco Second Generation Integrated Services Routers (ISR G2) and the Cisco 4451-X Integrated Services Router (ISR4451-X) could allow an unauthenticated, remote attacker to cause the ISR G2 Router or the SM-1T3/E3 module on the ISR4451-X to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability is due to improper handling of user input. An attacker could exploit this vulnerability by first connecting to the SM-1T3/E3 module console and entering a string sequence. A successful exploit could allow the attacker to cause the ISR G2 Router or the SM-1T3/E3 module on the ISR4451-X to reload, resulting in a DoS condition on an affected device.

Weakness: CWE-20, CWE-19

Which versions are affected by CVE-2018-0485?

It affects 2 products.

Products include Cisco Ios, Cisco Ios Xe.

How do I fix CVE-2018-0485?

No fix has been published for CVE-2018-0485 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-0485 being exploited?

There is no known exploitation of CVE-2018-0485 in the wild and no public exploit code.

All Cisco Ios vulnerabilities

Sources

Also known as GHSA-75cc-hh4w-xh9h.