Public Date:
1238231: CVE-2015-5352 openssh: XSECURITY restrictions bypass under certain conditions in ssh(1)
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.

Find out more about CVE-2015-5352 from the MITRE CVE dictionary dictionary and NIST NVD.


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 v2 metrics

Base Score 4.9
Base Metrics AV:N/AC:M/Au:S/C:P/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication Single
Confidentiality Impact Partial
Integrity Impact None
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 6 (openssh) RHSA-2016:0741 2016-05-10

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 7 openssh Not affected
Red Hat Enterprise Linux 5 openssh Will not fix

External References

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