CVE-2017-20115 in Server
Summary
by MITRE • 06/29/2022
A vulnerability was found in TrueConf Server 4.3.7 and classified as problematic. This issue affects some unknown processing of the file /admin/conferences/list/. The manipulation of the argument sort leads to basic cross site scripting (Reflected). The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 03/24/2023
This vulnerability resides in TrueConf Server version 4.3.7, a video conferencing and collaboration platform that has been identified with a reflected cross-site scripting flaw. The issue manifests within the administrative interface at the specific endpoint /admin/conferences/list/ where the application fails to properly sanitize user input parameters. The vulnerability is triggered when an attacker manipulates the sort argument parameter, which is then reflected back to the user without adequate output encoding or validation. This particular flaw falls under the CWE-79 category of Cross-Site Scripting, representing a classic reflected XSS vulnerability where malicious scripts are executed in the victim's browser through manipulated input.
The technical execution of this vulnerability involves an attacker crafting a malicious URL containing script code within the sort parameter and delivering it to unsuspecting users through phishing emails, social engineering campaigns, or by compromising legitimate conference links. When a victim clicks on the malicious link, the script code gets executed in their browser session, potentially allowing the attacker to steal session cookies, perform unauthorized actions on behalf of the victim, or redirect users to malicious websites. The remote exploitation capability means that no local access is required, making this vulnerability particularly dangerous for administrative interfaces that are accessible over the internet. This aligns with ATT&CK technique T1566.001 which covers phishing with malicious attachments and links, and T1584.004 which involves developing capabilities for malicious code execution.
The operational impact of this vulnerability extends beyond simple script execution as it provides attackers with potential access to sensitive administrative functions within the TrueConf Server environment. Since the vulnerability exists in the administrative conference listing functionality, successful exploitation could allow attackers to view, modify, or delete conference data, potentially compromising the entire video conferencing infrastructure. The reflected nature of the vulnerability means that the attack payload is delivered through the application itself, making it difficult to detect through traditional network monitoring. Organizations using this version of TrueConf Server face significant risk of unauthorized access to their conference management systems, which could lead to data breaches, service disruption, or unauthorized use of the conferencing platform for malicious activities. The public disclosure of the exploit increases the likelihood of widespread exploitation and makes this vulnerability particularly critical to address immediately.