CVE-2019-15502 : Vulnerability Insights and Analysis

TeamSpeak client before version 3.3.2 is vulnerable to a specific byte sequence that can be exploited by remote servers to cause a crash.

Understanding CVE-2019-15502

This CVE involves a vulnerability in the TeamSpeak client that allows remote servers to trigger a crash using a specific byte sequence.

What is CVE-2019-15502?

Prior to version 3.3.2, the TeamSpeak client is susceptible to a crash triggered by remote servers through a particular sequence of bytes: 0xe2 0x81 0xa8 0xe2 0x81 0xa7, representing Unicode characters U+2068 (FIRST STRONG ISOLATE) and U+2067 (RIGHT-TO-LEFT ISOLATE).

The Impact of CVE-2019-15502

This vulnerability can be exploited by malicious servers to crash TeamSpeak clients, potentially leading to denial of service (DoS) attacks.

Technical Details of CVE-2019-15502

The technical aspects of the CVE.

Vulnerability Description

The TeamSpeak client before version 3.3.2 allows remote servers to trigger a crash by utilizing the specific byte sequence mentioned above.

Affected Systems and Versions

TeamSpeak client versions prior to 3.3.2

Exploitation Mechanism

Remote servers can exploit the vulnerability by sending the Unicode character sequence U+2068 and U+2067.

Mitigation and Prevention

Ways to address and prevent the CVE.

Immediate Steps to Take

Update the TeamSpeak client to version 3.3.2 or newer to mitigate the vulnerability.
Avoid connecting to untrusted or suspicious TeamSpeak servers.

Long-Term Security Practices

Regularly update software and applications to the latest versions.
Implement network security measures to detect and block malicious server activities.

Patching and Updates

Stay informed about security patches and updates released by TeamSpeak to address vulnerabilities like CVE-2019-15502.