CVE-2016-3697

Publication date 1 June 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

libcontainer/user/user.go in runC before 0.1.0, as used in Docker before 1.11.2, improperly treats a numeric UID as a potential username, which allows local users to gain privileges via a numeric username in the password file in a container.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
docker.io	17.04 zesty	Not affected
	16.10 yakkety	Ignored end of life
	16.04 LTS xenial	Not affected
	15.10 wily	Ignored end of life
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
runc	17.04 zesty	Fixed 1.0.0~rc2+docker1.12.6-0ubuntu1
	16.10 yakkety	Ignored end of life
	16.04 LTS xenial	Not affected
	15.10 wily	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release

Notes

leosilva

debian claims that the code is not present in docker.io. in all the case runc is not affected anyway.

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.8 · High

Base metrics

Parameter	Value
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	7.8 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H