CVE-2017-6964 — HIGH (7.8) — White Hats Nepal

Vulnerability 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.

CVSS Score

7.8

HIGH

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Canonical	Ubuntu Linux	12.04
Debian	Debian Linux	8.0

Related Weaknesses (CWE)

CWE-252

References

http://www.debian.org/security/2017/dsa-3823Third Party Advisory
http://www.securityfocus.com/bid/97154Broken LinkThird Party AdvisoryVDB Entry
https://launchpad.net/bugs/1673627Issue TrackingThird Party Advisory
https://www.ubuntu.com/usn/usn-3246-1/Vendor Advisory
https://www.debian.org/security/2017/dsa-3823Third Party Advisory
http://www.debian.org/security/2017/dsa-3823Third Party Advisory
http://www.securityfocus.com/bid/97154Broken LinkThird Party AdvisoryVDB Entry
https://launchpad.net/bugs/1673627Issue TrackingThird Party Advisory
https://www.ubuntu.com/usn/usn-3246-1/Vendor Advisory

FAQ

What is CVE-2017-6964?

CVE-2017-6964 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...

How severe is CVE-2017-6964?

CVE-2017-6964 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-6964?

Check the references section above for vendor advisories and patch information. Affected products include: Canonical Ubuntu Linux, Debian Debian Linux.