CVE-2015-3629 Arbitrary File Write in Libcontainer
Local attackers can escape container isolation and write arbitrary files on the host via symlink attacks during container respawn.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-3629?
CVE-2015-3629 is a high-severity path traversal vulnerability in Opensuse Opensuse, published on 18 May 2015. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Libcontainer 1.6.0, as used in Docker Engine, allows local users to escape containerization ("mount namespace breakout") and write to arbitrary file on the host system via a symlink attack in an image when respawning a container.
Weakness: CWE-59
Which versions are affected by CVE-2015-3629?
3 open source packages ship an affected version, including github.com/docker/docker. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
github.com/docker/docker Go | From 1.6.0 | 1.6.1 |
github.com/docker/docker Go | From 1.6.0 | 1.6.1 |
github.com/docker/docker Go | From 1.6.0 | 1.6.1 |
Products include Docker Libcontainer, Opensuse Opensuse.
How do I fix CVE-2015-3629?
Upgrade github.com/docker/docker to 1.6.1 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2015-3629 being exploited?
There is no known exploitation of CVE-2015-3629 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2015-3629, GHSA-g44j-7vp3-68cv, GO-2022-0647, UBUNTU-CVE-2015-3629.