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Ubuntu Security Notice USN-3885-2

Ubuntu Security Notice USN-3885-2
Posted Mar 4, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3885-2 - USN-3885-1 fixed vulnerabilities in OpenSSH. It was discovered that the fix for CVE-2019-6111 turned out to be incomplete. This update fixes the problem. Harry Sintonen discovered multiple issues in the OpenSSH scp utility. If a user or automated system were tricked into connecting to an untrusted server, a remote attacker could possibly use these issues to write to arbitrary files, change directory permissions, and spoof client output. Various other issues were also addressed.

tags | advisory, remote, arbitrary, spoof, vulnerability
systems | linux, ubuntu
advisories | CVE-2019-6111
MD5 | f34497e7fb170dcf3d9ac60a51149cd4

Ubuntu Security Notice USN-3885-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3885-2
March 04, 2019

openssh vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

One of the fixes in USN-3885-1 was incomplete.

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

Details:

USN-3885-1 fixed vulnerabilities in OpenSSH. It was discovered that the fix
for CVE-2019-6111 turned out to be incomplete. This update fixes the
problem.

Original advisory details:

Harry Sintonen discovered multiple issues in the OpenSSH scp utility. If a
user or automated system were tricked into connecting to an untrusted
server, a remote attacker could possibly use these issues to write to
arbitrary files, change directory permissions, and spoof client output.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.10:
openssh-client 1:7.7p1-4ubuntu0.3

Ubuntu 18.04 LTS:
openssh-client 1:7.6p1-4ubuntu0.3

Ubuntu 16.04 LTS:
openssh-client 1:7.2p2-4ubuntu2.8

Ubuntu 14.04 LTS:
openssh-client 1:6.6p1-2ubuntu2.13

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

References:
https://usn.ubuntu.com/usn/usn-3885-2
https://usn.ubuntu.com/usn/usn-3885-1
CVE-2019-6111

Package Information:
https://launchpad.net/ubuntu/+source/openssh/1:7.7p1-4ubuntu0.3
https://launchpad.net/ubuntu/+source/openssh/1:7.6p1-4ubuntu0.3
https://launchpad.net/ubuntu/+source/openssh/1:7.2p2-4ubuntu2.8
https://launchpad.net/ubuntu/+source/openssh/1:6.6p1-2ubuntu2.13

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