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CVE-2017-6964

Status Candidate

Overview

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.

Related Files

Debian Security Advisory 3823-1
Posted Mar 28, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3823-1 - Ilja Van Sprundel discovered that the dmcrypt-get-device helper used to check if a given device is an encrypted device handled by devmapper, and used in eject, does not check return values from setuid() and setgid() when dropping privileges.

tags | advisory
systems | linux, debian
advisories | CVE-2017-6964
SHA-256 | 11ed3d35497fce0aa8208e337d18906978385a140e9058214a8d178bb172d613
Ubuntu Security Notice USN-3246-1
Posted Mar 28, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3246-1 - Ilja Van Sprundel discovered that dmcrypt-get-device incorrectly checked setuid and setgid return values. A local attacker could use this issue to execute code as an administrator.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2017-6964
SHA-256 | 38e9d099be590b4e07920777892cc4dab780f5d5f29c49ed15af521f8533e6dc
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