CVE-2017-6964

Publication date 27 March 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

dmcrypt-get-device, as shipped in the eject package of Debian and Ubuntu, does not check the return value of the (1) setuid or (2) setgid function, which might cause dmcrypt-get-device to execute code, which was intended to run as an unprivileged user, as root. This affects eject through 2.1.5+deb1+cvs20081104-13.1 on Debian, eject before 2.1.5+deb1+cvs20081104-13.1ubuntu0.16.10.1 on Ubuntu 16.10, eject before 2.1.5+deb1+cvs20081104-13.1ubuntu0.16.04.1 on Ubuntu 16.04 LTS, eject before 2.1.5+deb1+cvs20081104-13.1ubuntu0.14.04.1 on Ubuntu 14.04 LTS, and eject before 2.1.5+deb1+cvs20081104-9ubuntu0.1 on Ubuntu 12.04 LTS.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
eject	17.04 zesty	Fixed 2.1.5+deb1+cvs20081104-13.2
	16.10 yakkety	Fixed 2.1.5+deb1+cvs20081104-13.1ubuntu0.16.10.1
	16.04 LTS xenial	Fixed 2.1.5+deb1+cvs20081104-13.1ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 2.1.5+deb1+cvs20081104-13.1ubuntu0.14.04.1
	12.04 LTS precise	Fixed 2.1.5+deb1+cvs20081104-9ubuntu0.1

Notes

tyhicks

The dmcrypt-get-device binary is built from a patch the Debian/Ubuntu carry. It isn't likely to affect other distros.

Severity score breakdown

Parameter	Value
Base score	7.8 · High
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H