CVE-2015-3627 Symlink Attack in Libcontainer and Docker Engine

What is CVE-2015-3627?

CVE-2015-3627 is a high-severity path traversal vulnerability in n/a, 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 and Docker Engine before 1.6.1 opens the file-descriptor passed to the pid-1 process before performing the chroot, which allows local users to gain privileges via a symlink attack in an image.

Weakness: CWE-59

Which versions are affected by CVE-2015-3627?

3 open source packages ship an affected version, including github.com/docker/docker. It affects 2 products.

Products include Docker Docker, Docker Libcontainer.

How do I fix CVE-2015-3627?

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-2015-3627 being exploited?

There is no known exploitation of CVE-2015-3627 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2014-9357 Arbitrary Code Execution Critical 10.0
• CVE-2020-14298 Privilege escalation in Docker High 8.8
• CVE-2020-14300 Privilege escalation in Docker High 8.8
• CVE-2018-15514 Deserialization in n/a High 8.8
• CVE-2014-9356 Path Traversal in Docker High 8.6

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2015-3627, GHSA-g7v2-2qxx-wjrw, GO-2022-0649, UBUNTU-CVE-2015-3627.