{"id":"ALPINE-CVE-2021-3156","details":"Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via \"sudoedit -s\" and a command-line argument that ends with a single backslash character.","modified":"2026-09-15T08:17:46.649423109Z","published":"2021-01-26T21:15:12.987Z","upstream":["CVE-2021-3156"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-3156"}],"affected":[{"package":{"name":"sudo","ecosystem":"Alpine:v3.10","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.8.2"},{"fixed":"1.9.5p2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3156.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.11","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.8.2"},{"fixed":"1.8.31-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3156.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.8.2"},{"fixed":"1.9.5p2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3156.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.8.2"},{"fixed":"1.9.5p2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3156.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.8.2"},{"fixed":"1.9.5p2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3156.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.8.2"},{"fixed":"1.9.5p2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3156.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}