{"id":"ALPINE-CVE-2021-23240","details":"selinux_edit_copy_tfiles in sudoedit in Sudo before 1.9.5 allows a local unprivileged user to gain file ownership and escalate privileges by replacing a temporary file with a symlink to an arbitrary file target. This affects SELinux RBAC support in permissive mode. Machines without SELinux are not vulnerable.","modified":"2025-11-19T06:18:53.213871Z","published":"2021-01-12T09:15:14.107Z","upstream":["CVE-2021-23240"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-23240"}],"affected":[{"package":{"name":"sudo","ecosystem":"Alpine:v3.10","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.5p2-r0"}]}],"versions":["1.6.9_p17-r1","1.7.0-r0","1.7.1-r0","1.7.2-r0","1.7.2_p1-r0","1.7.2_p2-r0","1.7.2_p4-r0","1.7.2_p5-r0","1.7.2_p6-r0","1.7.2_p6-r1","1.7.2_p7-r0","1.7.3-r0","1.7.4_p2-r0","1.7.4_p3-r0","1.7.4_p4-r0","1.7.4_p5-r0","1.7.4p6-r0","1.8.0-r0","1.8.0-r1","1.8.1-r0","1.8.10-r0","1.8.10_p1-r0","1.8.10_p2-r0","1.8.10_p3-r0","1.8.11_p2-r0","1.8.12-r0","1.8.13-r0","1.8.14_p3-r0","1.8.14_p3-r1","1.8.15-r0","1.8.15-r1","1.8.16-r0","1.8.17-r0","1.8.17_p1-r0","1.8.18-r0","1.8.18_p1-r0","1.8.19_p1-r0","1.8.19_p2-r0","1.8.1p1-r0","1.8.2-r0","1.8.20_p1-r0","1.8.20_p2-r0","1.8.21_p2-r0","1.8.21_p2-r1","1.8.21_p2-r2","1.8.22-r2","1.8.23-r2","1.8.25_p1-r2","1.8.27-r0","1.8.27-r1","1.8.27-r2","1.8.3-r0","1.8.3_p1-r0","1.8.3_p2-r0","1.8.3_p2-r1","1.8.4-r0","1.8.4_p1-r0","1.8.4_p2-r0","1.8.4_p4-r0","1.8.5_p1-r0","1.8.5_p2-r0","1.8.5_p3-r0","1.8.6-r0","1.8.6_p1-r0","1.8.6_p3-r0","1.8.6_p4-r0","1.8.6_p5-r0","1.8.6_p6-r0","1.8.6_p7-r0","1.8.6_p8-r0","1.8.7-r0","1.8.8-r0","1.8.9_p4-r0","1.8.9_p5-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-23240.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.11","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.5p2-r0"}]}],"versions":["1.6.9_p17-r1","1.7.0-r0","1.7.1-r0","1.7.2-r0","1.7.2_p1-r0","1.7.2_p2-r0","1.7.2_p4-r0","1.7.2_p5-r0","1.7.2_p6-r0","1.7.2_p6-r1","1.7.2_p7-r0","1.7.3-r0","1.7.4_p2-r0","1.7.4_p3-r0","1.7.4_p4-r0","1.7.4_p5-r0","1.7.4p6-r0","1.8.0-r0","1.8.0-r1","1.8.1-r0","1.8.10-r0","1.8.10_p1-r0","1.8.10_p2-r0","1.8.10_p3-r0","1.8.11_p2-r0","1.8.12-r0","1.8.13-r0","1.8.14_p3-r0","1.8.14_p3-r1","1.8.15-r0","1.8.15-r1","1.8.16-r0","1.8.17-r0","1.8.17_p1-r0","1.8.18-r0","1.8.18_p1-r0","1.8.19_p1-r0","1.8.19_p2-r0","1.8.1p1-r0","1.8.2-r0","1.8.20_p1-r0","1.8.20_p2-r0","1.8.21_p2-r0","1.8.21_p2-r1","1.8.21_p2-r2","1.8.22-r2","1.8.23-r2","1.8.25_p1-r2","1.8.27-r0","1.8.28-r0","1.8.28p1-r0","1.8.29-r0","1.8.29-r1","1.8.29-r2","1.8.3-r0","1.8.31-r0","1.8.31-r1","1.8.3_p1-r0","1.8.3_p2-r0","1.8.3_p2-r1","1.8.4-r0","1.8.4_p1-r0","1.8.4_p2-r0","1.8.4_p4-r0","1.8.5_p1-r0","1.8.5_p2-r0","1.8.5_p3-r0","1.8.6-r0","1.8.6_p1-r0","1.8.6_p3-r0","1.8.6_p4-r0","1.8.6_p5-r0","1.8.6_p6-r0","1.8.6_p7-r0","1.8.6_p8-r0","1.8.7-r0","1.8.8-r0","1.8.9_p4-r0","1.8.9_p5-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-23240.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.5-r0"}]}],"versions":["1.6.9_p17-r1","1.7.0-r0","1.7.1-r0","1.7.2-r0","1.7.2_p1-r0","1.7.2_p2-r0","1.7.2_p4-r0","1.7.2_p5-r0","1.7.2_p6-r0","1.7.2_p6-r1","1.7.2_p7-r0","1.7.3-r0","1.7.4_p2-r0","1.7.4_p3-r0","1.7.4_p4-r0","1.7.4_p5-r0","1.7.4p6-r0","1.8.0-r0","1.8.0-r1","1.8.1-r0","1.8.10-r0","1.8.10_p1-r0","1.8.10_p2-r0","1.8.10_p3-r0","1.8.11_p2-r0","1.8.12-r0","1.8.13-r0","1.8.14_p3-r0","1.8.14_p3-r1","1.8.15-r0","1.8.15-r1","1.8.16-r0","1.8.17-r0","1.8.17_p1-r0","1.8.18-r0","1.8.18_p1-r0","1.8.19_p1-r0","1.8.19_p2-r0","1.8.1p1-r0","1.8.2-r0","1.8.20_p1-r0","1.8.20_p2-r0","1.8.21_p2-r0","1.8.21_p2-r1","1.8.21_p2-r2","1.8.22-r2","1.8.23-r2","1.8.25_p1-r2","1.8.27-r0","1.8.28-r0","1.8.28p1-r0","1.8.29-r0","1.8.3-r0","1.8.30-r0","1.8.31-r0","1.8.31p1-r0","1.8.31p1-r1","1.8.3_p1-r0","1.8.3_p2-r0","1.8.3_p2-r1","1.8.4-r0","1.8.4_p1-r0","1.8.4_p2-r0","1.8.4_p4-r0","1.8.5_p1-r0","1.8.5_p2-r0","1.8.5_p3-r0","1.8.6-r0","1.8.6_p1-r0","1.8.6_p3-r0","1.8.6_p4-r0","1.8.6_p5-r0","1.8.6_p6-r0","1.8.6_p7-r0","1.8.6_p8-r0","1.8.7-r0","1.8.8-r0","1.8.9_p4-r0","1.8.9_p5-r0","1.9.0-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-23240.json"}},{"package":{"name":"sudo","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/sudo?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.5-r0"}]}],"versions":["1.6.9_p17-r1","1.7.0-r0","1.7.1-r0","1.7.2-r0","1.7.2_p1-r0","1.7.2_p2-r0","1.7.2_p4-r0","1.7.2_p5-r0","1.7.2_p6-r0","1.7.2_p6-r1","1.7.2_p7-r0","1.7.3-r0","1.7.4_p2-r0","1.7.4_p3-r0","1.7.4_p4-r0","1.7.4_p5-r0","1.7.4p6-r0","1.8.0-r0","1.8.0-r1","1.8.1-r0","1.8.10-r0","1.8.10_p1-r0","1.8.10_p2-r0","1.8.10_p3-r0","1.8.11_p2-r0","1.8.12-r0","1.8.13-r0","1.8.14_p3-r0","1.8.14_p3-r1","1.8.15-r0","1.8.15-r1","1.8.16-r0","1.8.17-r0","1.8.17_p1-r0","1.8.18-r0","1.8.18_p1-r0","1.8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