Vulnerability DatabaseCVE-2021-30465
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CVE-2021-30465
May 27, 2021
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.
Related Resources (15)
https://nvd.nist.gov/vuln/detail/CVE-2021-30465
https://access.redhat.com/security/cve/CVE-2021-30465
https://security.gentoo.org/glsa/202107-26
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4HOARVIT47RULTTFWAU7XBG4WY6TDDHV/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4HOARVIT47RULTTFWAU7XBG4WY6TDDHV
https://lists.debian.org/debian-lts-announce/2023/03/msg00023.html
https://github.com/opencontainers/runc/security/advisories/GHSA-c3xm-pvg7-gh7r
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/35ZW6NBZSBH5PWIT7JU4HXOXGFVDCOHH
http://www.openwall.com/lists/oss-security/2021/05/19/2
https://security.netapp.com/advisory/ntap-20210708-0003
https://github.com/opencontainers/runc/releases
https://bugzilla.opensuse.org/show_bug.cgi?id=1185405
https://security.netapp.com/advisory/ntap-20210708-0003/
https://github.com/opencontainers/runc/commit/0ca91f44f1664da834bc61115a849b56d22f595f
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35ZW6NBZSBH5PWIT7JU4HXOXGFVDCOHH/
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CVSS v4
Base Score:
9
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
8.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
CVSS v2
Base Score:
6
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Weakness Type (CWE)
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-362
Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-367
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-22
EPSS
Base Score:
1.47