--- title: "CVE-2015-6565\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2015-6565?format=md keywords: index, follow --- # CVE-2015-6565 Publication date 24 August 2015 Last updated 24 July 2024 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description sshd in OpenSSH 6.8 and 6.9 uses world-writable permissions for TTY devices, which allows local users to cause a denial of service (terminal disruption) or possibly have unspecified other impact by writing to a device, as demonstrated by writing an escape sequence. [Read the notes from the security team](https://ubuntu.com/security/CVE-2015-6565?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | openssh | 15.04 vivid | Not affected | | 14.04 LTS trusty | Not affected | | 12.04 LTS precise | Not affected | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ## Notes --- ### [mdeslaur](https://launchpad.net/~mdeslaur) in wily, patch is called backport-fix-pty-permissions.patch ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6565) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2015-6565) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2015-6565) * [Debian](https://security-tracker.debian.org/tracker/CVE-2015-6565) ### Other references * * * * *