{"id":"ALPINE-CVE-2019-18634","details":"In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c.","modified":"2026-09-21T06:17:52.505888657Z","published":"2020-01-29T18:15:12.247Z","upstream":["CVE-2019-18634"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2019-18634"}],"affected":[{"package":{"name":"sudo","ecosystem":"Alpine:v3.10","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.1"},{"fixed":"1.8.27-r2"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18634.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.11","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.1"},{"fixed":"1.8.29-r2"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18634.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.1"},{"fixed":"1.8.31-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18634.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.1"},{"fixed":"1.8.31-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18634.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.1"},{"fixed":"1.8.31-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18634.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.1"},{"fixed":"1.8.31-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18634.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.8","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.1"},{"fixed":"1.8.23-r4"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18634.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.9","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.1"},{"fixed":"1.8.25_p1-r3"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18634.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"}]}