USN-3809-2: OpenSSH regression | Ubuntu security notices

Packages

openssh - secure shell (SSH) for secure access to remote machines

Details

USN-3809-1 fixed vulnerabilities in OpenSSH. The update for CVE-2018-15473
was incomplete and could introduce a regression in certain environments.
This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Robert Swiecki discovered that OpenSSH incorrectly handled certain messages.
An attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
(CVE-2016-10708)

It was discovered that OpenSSH incorrectly handled certain requests.
An attacker could possibly use this issue to access sensitive information.
(CVE-2018-15473)

USN-3809-1 fixed vulnerabilities in OpenSSH. The update for CVE-2018-15473
was incomplete and could introduce a regression in certain environments.
This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Robert Swiecki discovered that OpenSSH incorrectly handled certain messages.
An attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
(CVE-2016-10708)

It was discovered that OpenSSH incorrectly handled certain requests.
An attacker could possibly use this issue to access sensitive information.
(CVE-2018-15473)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

Ubuntu Release	Package Version
18.04 bionic	openssh-server – 1:7.6p1-4ubuntu0.5

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

https://launchpad.net/bugs/1934501