X11 Connection Bypass Vulnerability in OpenSSH

CVE-2015-5352 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:P/A:N

The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted mode is not used, lacks a check of the refusal deadline for X connections, which makes it easier for remote attackers to bypass intended access restrictions via a connection outside of the permitted time window.

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