CVE-2022-26780 : What You Need to Know

This article discusses the CVE-2022-26780 vulnerability found in InHand Networks InRouter302 V3.5.4, highlighting its impact, technical details, and mitigation steps.

Understanding CVE-2022-26780

CVE-2022-26780 is a critical vulnerability in the libnvram.so nvram_import functionality of InHand Networks InRouter302 V3.5.4, leading to remote code execution due to improper input validation.

What is CVE-2022-26780?

Multiple improper input validation vulnerabilities exist in InHand Networks InRouter302 V3.5.4, allowing attackers to execute remote code by exploiting the libnvram.so nvram_import functionality and the

httpd

's

user_define_init

function.

The Impact of CVE-2022-26780

With a CVSS base score of 9.9 (Critical), this vulnerability poses a high risk to confidentiality, integrity, and availability, requiring low privileges for exploitation over the network.

Technical Details of CVE-2022-26780

The following technical details shed light on the vulnerability.

Vulnerability Description

The vulnerability arises from improper input validation in the libnvram.so nvram_import functionality and

httpd

's

user_define_init

function, enabling remote code execution.

Affected Systems and Versions

The affected product is InRouter302 V3.5.4 by InHand Networks.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specially-crafted file to trigger remote code execution or by controlling the

user_define_timeout

nvram variable.

Mitigation and Prevention

To safeguard systems from CVE-2022-26780, consider the following mitigation strategies.

Immediate Steps to Take

Update the affected product to a patched version or apply vendor-supplied fixes promptly.
Monitor network traffic for any suspicious activities related to this vulnerability.

Long-Term Security Practices

Regularly update and patch all software and firmware to mitigate known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential exploits.

Patching and Updates

Stay informed about security advisories from InHand Networks and apply recommended patches and updates to enhance system security.