CVE-2018-17613 : Security Advisory and Response

Telegram Desktop version 1.3.16 alpha, when using the "Use proxy" feature, exposes user credentials and application data over the SOCKS5 protocol without encryption.

Understanding CVE-2018-17613

When the "Use proxy" feature is enabled in Telegram Desktop version 1.3.16 alpha, it sends sensitive information in cleartext, posing a security risk.

What is CVE-2018-17613?

This CVE refers to a vulnerability in Telegram Desktop where enabling the "Use proxy" feature results in the transmission of user credentials and application data without encryption via the SOCKS5 protocol.

The Impact of CVE-2018-17613

Attackers can intercept and view sensitive user credentials and application information transmitted over the network.
This vulnerability compromises user privacy and confidentiality.

Technical Details of CVE-2018-17613

Telegram Desktop's security flaw explained.

Vulnerability Description

The vulnerability in Telegram Desktop version 1.3.16 alpha allows user credentials and application data to be sent in plaintext over the SOCKS5 protocol when the "Use proxy" feature is activated.

Affected Systems and Versions

Affected Version: Telegram Desktop 1.3.16 alpha
All systems using this specific version with the "Use proxy" feature enabled are vulnerable.

Exploitation Mechanism

Attackers can exploit this vulnerability by intercepting network traffic to capture sensitive information transmitted without encryption.

Mitigation and Prevention

Protecting against CVE-2018-17613.

Immediate Steps to Take

Disable the "Use proxy" feature in Telegram Desktop to prevent the transmission of sensitive data in plaintext.
Avoid using public Wi-Fi networks where attackers can easily intercept unencrypted data.

Long-Term Security Practices

Use VPN services to encrypt network traffic and protect sensitive information from interception.
Regularly update Telegram Desktop to the latest version to patch known security vulnerabilities.

Patching and Updates

Ensure that Telegram Desktop is updated to the latest version to apply security patches and prevent exploitation of this vulnerability.