CVE-2019-19921 Information

Description

runc through 1.0.0-rc9 has Incorrect Access Control leading to Escalation of Privileges related to libcontainer/rootfs_linux.go. To exploit this an attacker must be able to spawn two containers with custom volume-mount configurations and be able to run custom images. (This vulnerability does not affect Docker due to an implementation detail that happens to block the attack.)

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00018.html https://access.redhat.com/errata/RHSA-2020:0688 https://access.redhat.com/errata/RHSA-2020:0695 https://github.com/opencontainers/runc/issues/2197 https://github.com/opencontainers/runc/pull/2190 https://github.com/opencontainers/runc/releases https://security.gentoo.org/glsa/202003-21 https://security-tracker.debian.org/tracker/CVE-2019-19921 https://usn.ubuntu.com/4297-1/

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.0