CVE-2017-4990 : What You Need to Know

EMC Avamar Server Software 7.4.1-58, 7.4.0-242, 7.3.1-125, 7.3.0-233, 7.3.0-226 allows unauthorized individuals to exploit the file upload feature, potentially leading to arbitrary code execution.

Understanding CVE-2017-4990

What is CVE-2017-4990?

CVE-2017-4990 is a vulnerability in EMC Avamar Server Software versions 7.4.1-58, 7.4.0-242, 7.3.1-125, 7.3.0-233, 7.3.0-226 that enables attackers to upload malicious files, granting them the ability to execute arbitrary code on the Avamar Server system.

The Impact of CVE-2017-4990

The vulnerability allows unauthorized users to compromise the Avamar Server system by uploading specially crafted files, potentially leading to unauthorized code execution.

Technical Details of CVE-2017-4990

Vulnerability Description

The flaw in EMC Avamar Server Software versions 7.4.1-58, 7.4.0-242, 7.3.1-125, 7.3.0-233, 7.3.0-226 permits unauthorized file uploads, enabling attackers to execute arbitrary code on the system.

Affected Systems and Versions

EMC Avamar Server Software 7.4.1-58
EMC Avamar Server Software 7.4.0-242
EMC Avamar Server Software 7.3.1-125
EMC Avamar Server Software 7.3.0-233
EMC Avamar Server Software 7.3.0-226

Exploitation Mechanism

Attackers can exploit this vulnerability by uploading a carefully crafted file to any directory within the Avamar Server system, granting them the ability to run arbitrary code.

Mitigation and Prevention

Immediate Steps to Take

Apply patches provided by the vendor to fix the vulnerability.
Restrict access to the file upload feature to authorized users only.
Monitor file uploads for any suspicious activity.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities.
Conduct security training for users to recognize and report suspicious activities.

Patching and Updates

Ensure that the Avamar Server Software is updated to the latest version to mitigate the vulnerability.