UNIX symbolic link following in Docker - CVE-2015-3627
Published: August 30, 2022
Vulnerability identifier: #VU66857
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2015-3627
CWE-ID: CWE-61
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Docker Inc.
Affected software:
Docker
Docker
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a symlink following issue, because Docker opens the file-descriptor passed to the pid-1 process before performing the chroot. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.
Successful exploitation of this vulnerability may result in privilege escalation.
How to mitigate CVE-2015-3627
Install updates from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-updates/2015-05/msg00023.html
- http://packetstormsecurity.com/files/131835/Docker-Privilege-Escalation-Information-Disclosure.html
- http://seclists.org/fulldisclosure/2015/May/28
- https://groups.google.com/forum/#!searchin/docker-user/1.6.1/docker-user/47GZrihtr-4/nwgeOOFLexIJ