CVE-2020-15137 : Vulnerability Insights and Analysis

HoRNDIS is affected by an integer overflow vulnerability in the RNDIS packet parsing routines, potentially leading to disclosure of kernel memory or crashes. This CVE has a CVSS base score of 5.5.

Understanding CVE-2020-15137

HoRNDIS is susceptible to an integer overflow issue that can be exploited by a malicious USB device to expose kernel memory or crash the system.

What is CVE-2020-15137?

The vulnerability in HoRNDIS allows a USB device to manipulate specific parameters, potentially leading to disclosure of kernel memory or system crashes.

The Impact of CVE-2020-15137

Confidentiality Impact: High
Availability Impact: High
Base Score: 5.5 (Medium)
Attack Complexity: High
Privileges Required: Low
User Interaction: Required
Attack Vector: Physical

Technical Details of CVE-2020-15137

HoRNDIS is affected by an integer overflow vulnerability that can be exploited through USB devices.

Vulnerability Description

The vulnerability allows an attacker to trigger disclosure of kernel memory or system crashes by manipulating specific parameters.

Affected Systems and Versions

Product: HoRNDIS
Vendor: jwise
Versions Affected: <= 9.2

Exploitation Mechanism

The vulnerability is in

HoRNDIS::receivePacket

Manipulation of

msg_len

,

data_ofs

, and

data_len

by a USB device
Negative

data_ofs

value can bypass security checks
Can cause a wild pointer copy in the

mbuf_copyback

call

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-15137.

Immediate Steps to Take

Avoid connecting untrusted USB devices
Regularly monitor for any suspicious activities
Consider alternative software solutions

Long-Term Security Practices

Keep systems and software updated
Implement network segmentation to limit exposure
Educate users on USB device security

Patching and Updates

As the software is not maintained, consider alternative solutions
Regularly check for security advisories and updates from reliable sources