CVE-2015-5352
openssh: XSECURITY restrictions bypass under certain conditions in ssh(1)
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · July 1, 2015
Updated · November 21, 2025
Description
It was found that the OpenSSH client did not properly enforce the ForwardX11Timeout setting. A malicious or compromised remote X application could possibly use this flaw to establish a trusted connection to the local X server, even if only untrusted X11 forwarding was requested.
Statement
This issue does not affect the version of openssh package as shipped with Red Hat Enterprise Linux 7. This issue affects the version of openssh package as shipped with Red Hat Enterprise Linux 5 and 6.
Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 4.9AV:N/AC:M/Au:S/C:P/I:N/A:P
CWE not specified