USN-4103-2: Docker vulnerability
First published: Mon Aug 19 2019(Updated: )
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.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/docker.io | <18.09.7-0ubuntu1~19.04.5 | 18.09.7-0ubuntu1~19.04.5 |
| Ubuntu OpenSSH Client | =19.04 | |
| All of | ||
| ubuntu/docker.io | <18.09.7-0ubuntu1~18.04.4 | 18.09.7-0ubuntu1~18.04.4 |
| Ubuntu OpenSSH Client | =18.04 | |
| All of | ||
| ubuntu/docker.io | <18.09.7-0ubuntu1~16.04.5 | 18.09.7-0ubuntu1~16.04.5 |
| Ubuntu OpenSSH Client | =16.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2019-1020014
- https://ubuntu.com/security/notices/USN-4103-1
- https://ubuntu.com/security/notices/USN-4856-1
- 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
- https://ubuntu.com/security/notices/USN-4103-2 (Advisory)
Frequently Asked Questions
What is the severity of USN-4103-2?
The severity of USN-4103-2 is significant as it allows for potential denial of service or arbitrary code execution.
How do I fix USN-4103-2?
To fix USN-4103-2, update the docker.io package to version 18.09.7-0ubuntu1~19.04.5 or later depending on your Ubuntu version.
What is the cause of USN-4103-2?
USN-4103-2 is caused by a double free vulnerability in the docker-credential-helpers dependency of Docker.
Who discovered the vulnerability USN-4103-2?
The vulnerability USN-4103-2 was discovered by security researcher Jasiel Spelman.
What versions of Docker are affected by USN-4103-2?
Docker versions prior to 18.09.7-0ubuntu1~19.04.5, 18.09.7-0ubuntu1~18.04.4, and 18.09.7-0ubuntu1~16.04.5 are affected by USN-4103-2.
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- anchor-related/USN-4103-1
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- version/ubuntu openssh client/16.04