CVE-2021-30465 Information

Description

runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition.

CVSS Vector

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

Reference

https://github.com/opencontainers/runc/security/advisories/GHSA-c3xm-pvg7-gh7r https://github.com/opencontainers/runc/releases http://www.openwall.com/lists/oss-security/2021/05/19/2 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4HOARVIT47RULTTFWAU7XBG4WY6TDDHV/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/35ZW6NBZSBH5PWIT7JU4HXOXGFVDCOHH/ https://bugzilla.opensuse.org/show_bug.cgi?id=1185405 https://github.com/opencontainers/runc/commit/0ca91f44f1664da834bc61115a849b56d22f595f https://security.netapp.com/advisory/ntap-20210708-0003/ https://security.gentoo.org/glsa/202107-26

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.5