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OpenSSH bypass timeout checks and XSECURITY restrictions


Oct 10, 2023

Summary

An access restriction bypass vulnerability in OpenSSH allows remote attackers to evade X11 forwarding connection deadlines.

Vulnerability ID Vulnerability Overview
CVE-2015-5352 The x11_open_helper function in OpenSSH (before version 6.9) does not properly check the refusal deadline for X connections when ForwardX11Trusted mode is disabled. This vulnerability makes it easier for a compromised or malicious remote X application to bypass intended access restrictions and establish a connection to the local X server outside of the permitted time window.


Affected Supported TeraStations

None

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Date Description
10/10/2023 Initial release


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