{"id":"ALPINE-CVE-2021-30465","details":"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.","modified":"2026-11-03T06:32:47.091139704Z","published":"2021-05-27T13:15:08.077Z","upstream":["CVE-2021-30465"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-30465"}],"affected":[{"package":{"name":"k3s","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}},{"package":{"name":"runc","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/runc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0_rc95-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-30465.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}