{"id":"UBUNTU-CVE-2021-45707","details":"An issue was discovered in the nix crate 0.16.0 and later before 0.20.2, 0.21.x before 0.21.2, and 0.22.x before 0.22.2 for Rust. unistd::getgrouplist has an out-of-bounds write if a user is in more than 16 /etc/groups groups.","modified":"2026-01-20T17:20:59.899256Z","published":"2021-12-27T00:15:00Z","upstream":["CVE-2021-45707"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-45707"},{"type":"REPORT","url":"https://rustsec.org/advisories/RUSTSEC-2021-0119.html"},{"type":"REPORT","url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/nix/RUSTSEC-2021-0119.md"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-45707"}],"affected":[{"package":{"name":"rust-nix","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/rust-nix@0.16.1-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.1-1","0.15.0-1","0.15.0-2","0.16.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.16.1-1","binary_name":"librust-nix-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-45707.json"}},{"package":{"name":"rust-nix","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/rust-nix@0.23.1-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.19.0-1","0.19.0-2","0.23.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.23.1-1","binary_name":"librust-nix-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-45707.json"}},{"package":{"name":"rust-nix","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/rust-nix@0.27.1-1build1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.26.2-1","0.27.1-1","0.27.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.27.1-1build1","binary_name":"librust-nix-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-45707.json"}},{"package":{"name":"rust-nix","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/rust-nix@0.29.0-2?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.29.0-2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.29.0-2","binary_name":"librust-nix-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-45707.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}