Ubuntu Security Notice 4103-2 - Jasiel Spelman discovered that a double free existed in the docker-credential- helpers dependency of Docker. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Jasiel Spelman discovered that a double free existed in docker-credential- helpers. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
db04566acdcd349de4736a6dc34a44616333ad7993774ecb342b70490985c683
==========================================================================
Ubuntu Security Notice USN-4103-2
August 19, 2019
Docker vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
Docker could be made to crash or run programs as your login.
Software Description:
- docker.io: Linux container runtime
Details:
Jasiel Spelman discovered that a double free existed in the docker-credential-
helpers dependency of Docker. A local attacker could use this to cause a denial
of service
(crash) or possibly execute arbitrary code.
Original advisory details:
Jasiel Spelman discovered that a double free existed in docker-credential-
helpers. A local attacker could use this to cause a denial of service
(crash) or possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 19.04:
docker.io 18.09.7-0ubuntu1~19.04.5
Ubuntu 18.04 LTS:
docker.io 18.09.7-0ubuntu1~18.04.4
Ubuntu 16.04 LTS:
docker.io 18.09.7-0ubuntu1~16.04.5
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4103-2
https://usn.ubuntu.com/4103-1
CVE-2019-1020014
Package Information:
https://launchpad.net/ubuntu/+source/docker.io/18.09.7-0ubuntu1~19.04.5
https://launchpad.net/ubuntu/+source/docker.io/18.09.7-0ubuntu1~18.04.4
https://launchpad.net/ubuntu/+source/docker.io/18.09.7-0ubuntu1~16.04.5