CVE-2018-15370: Cisco Catalyst 6800 Series Switches ROM Monitor Software Secure Boot Bypass Vulnerability
First published: Fri Oct 05 2018(Updated: )
A vulnerability in Cisco IOS ROM Monitor (ROMMON) Software for Cisco Catalyst 6800 Series Switches could allow an unauthenticated, local attacker to bypass Cisco Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to the presence of a hidden command in the affected software. An attacker could exploit this vulnerability by connecting to an affected device via the console, forcing the device into ROMMON mode, and writing a malicious pattern to a specific memory address on the device. A successful exploit could allow the attacker to bypass signature validation checks by Cisco Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS ROM Monitor (ROMMON) | =15.1\(2\)sy3 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2018-15370?
CVE-2018-15370 has a high severity rating due to the potential for an attacker to bypass secure boot processes.
How do I fix CVE-2018-15370?
To fix CVE-2018-15370, upgrade the Cisco IOS ROM Monitor software to a version that addresses this vulnerability.
What devices are affected by CVE-2018-15370?
CVE-2018-15370 specifically affects Cisco Catalyst 6800 Series Switches running the 15.1(2)sy3 version of IOS ROM Monitor.
What type of attacker can exploit CVE-2018-15370?
An unauthenticated, local attacker can exploit CVE-2018-15370 to load a compromised software image.
What are the potential impacts of CVE-2018-15370?
Exploitation of CVE-2018-15370 can lead to unauthorized access and control over the affected Cisco device.
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