CVE-2015-5352 Security feature bypass in n/a
Remote attackers can bypass X11 forwarding access restrictions in OpenSSH when trusted mode is disabled, allowing unauthorized connections outside permitted time windows.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-5352?
CVE-2015-5352 is a medium-severity vulnerability in OpenSSH, published on 3 Aug 2015. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-264
Which versions are affected by CVE-2015-5352?
It affects 1 product.
Products include OpenSSH.
How do I fix CVE-2015-5352?
Upgrade to a fixed version.
Is CVE-2015-5352 being exploited?
There is no known exploitation of CVE-2015-5352 in the wild and no public exploit code.
Other vulnerabilities in OpenSSH
Sources
Also known as DEBIAN-CVE-2015-5352, GHSA-6fpx-j7j8-53rc, MGASA-2015-0271, UBUNTU-CVE-2015-5352.