CVE-2017-20119 : Exploit Details and Defense Strategies

A problematic vulnerability has been discovered in TrueConf Server 4.3.7, allowing for an open redirect exploit through manipulation of the redirect_url argument.

Understanding CVE-2017-20119

This CVE involves a vulnerability in TrueConf Server 4.3.7 that enables remote attackers to trigger an open redirect by manipulating a specific argument.

What is CVE-2017-20119?

The vulnerability in TrueConf Server 4.3.7 allows for unauthorized remote exploitation by manipulating the redirect_url argument, leading to an open redirect.

The Impact of CVE-2017-20119

The vulnerability has a CVSS base score of 3.5, indicating a low severity issue with low attack complexity and impact on integrity and confidentiality.

Technical Details of CVE-2017-20119

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability exists in an unidentified part of the file /admin/general/change-lang in TrueConf Server 4.3.7, allowing for an open redirect through manipulation of the redirect_url argument.

Affected Systems and Versions

Product: TrueConf Server
Vendor: TrueConf
Version: 4.3.7

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Scope: Unchanged
Exploitation Impact: Low

Mitigation and Prevention

To address and prevent the exploitation of CVE-2017-20119, follow these steps:

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly.
Monitor and restrict network access to vulnerable systems.
Educate users about phishing and social engineering tactics.

Long-Term Security Practices

Regularly update and patch software to mitigate known vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.
Conduct regular security assessments and penetration testing.

Patching and Updates

TrueConf Server users should ensure they are running the latest version (4.3.7) with all available security patches applied.