CVE-2021-30465

CVSS V2 Medium 6 CVSS V3 High 8.5

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.

Overview

CVE ID
CVE-2021-30465

Assigner
cve@mitre.org

Vulnerability Status
Modified

Published Version
2021-05-27T13:15:08

Last Modified Date
2023-03-27T18:15:10

Weakness Enumerations

CWE	URL
CWE-362	http://cwe.mitre.org/data/definitions/362.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
cpe:2.3:a:linuxfoundation:runc::::::::	1	OR	0.1.1
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc1::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc10::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc2::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc3::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc4::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc5::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc6::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc7::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc8::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc9::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc90::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc91::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc92::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc93::::::	1	OR
cpe:2.3:a:linuxfoundation:runc:1.0.0:rc94::::::	1	OR
cpe:2.3:o:fedoraproject:fedora:33:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:34:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:M/Au:S/C:P/I:P/A:P

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
SINGLE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
6

Severity
MEDIUM

Exploitability Score
6.8

Impact Score
6.4

CVSS Version 3

Version
3.1

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

Attack Vector
NETWORK

Attack Compatibility
HIGH

Privileges Required
LOW

User Interaction
NONE

Scope
CHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
8.5

Base Severity
HIGH

Exploitability Score
1.8

Impact Score
6

References

Reference URL	Reference Tags
http://www.openwall.com/lists/oss-security/2021/05/19/2	Mailing List Third Party Advisory
https://bugzilla.opensuse.org/show_bug.cgi?id=1185405	Issue Tracking
https://github.com/opencontainers/runc/commit/0ca91f44f1664da834bc61115a849b56d22f595f	Patch Third Party Advisory
https://github.com/opencontainers/runc/releases	Release Notes Third Party Advisory
https://github.com/opencontainers/runc/security/advisories/GHSA-c3xm-pvg7-gh7r	Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/03/msg00023.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/35ZW6NBZSBH5PWIT7JU4HXOXGFVDCOHH/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4HOARVIT47RULTTFWAU7XBG4WY6TDDHV/	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202107-26	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210708-0003/	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-30465
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30465

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:07:40				Added to TrackCVE
2022-12-05 03:08:37	2021-05-27T13:15Z	2021-05-27T13:15:08	CVE Published Date	updated
2022-12-05 03:08:37		2022-06-28T14:11:45	CVE Modified Date	updated
2022-12-05 03:08:37		Analyzed	Vulnerability Status	updated
2023-03-27 19:11:43		2023-03-27T18:15:10	CVE Modified Date	updated
2023-03-27 19:11:43	Analyzed	Modified	Vulnerability Status	updated
2023-03-27 19:11:44			References	updated