Описание
Nix is a package manager for Linux and other Unix systems. A bug in the fix for CVE-2024-27297 allowed for arbitrary overwrites of files writable by the Nix process orchestrating the builds (typically the Nix daemon running as root in multi-user installations) by following symlinks during fixed-output derivation output registration. This affects sandboxed Linux builds - sandboxed macOS builds are unaffected. The location of the temporary output used for the output copy was located inside the build chroot. A symlink, pointing to an arbitrary location in the filesystem, could be created by the derivation builder at that path. During output registration, the Nix process (running in the host mount namespace) would follow that symlink and overwrite the destination with the derivation's output contents. In multi-user installations, this allows all users able to submit builds to the Nix daemon (allowed-users - defaulting to all users) to gain root privileges by modifying sensitive files. This vulnerability is fixed in 2.34.5, 2.33.4, 2.32.7, 2.31.4, 2.30.4, 2.29.3, and 2.28.6.
Пакеты
| Пакет | Статус | Версия исправления | Релиз | Тип |
|---|---|---|---|---|
| nix | fixed | 2.34.6+dfsg-1 | package | |
| nix | no-dsa | trixie | package | |
| nix | not-affected | bookworm | package | |
| nix | postponed | bullseye | package |
Примечания
https://github.com/NixOS/nix/security/advisories/GHSA-g3g9-5vj6-r3gj
Introduced with: https://github.com/NixOS/nix/commit/a3163b9eabb952b4aa96e376dea95ebcca97b31a (2.21.0)
Fixed by: https://github.com/NixOS/nix/commit/44017ca497c8b44d5dac179f5afc63e91fe45ed6 (master)
Fixed by: https://github.com/NixOS/nix/commit/a760af86b3a42aa5ac9d9002929107fe357bf128 (master)
Fixed by: https://github.com/NixOS/nix/commit/0e3412a93f43a017342c267000c152e5c45327e7 (master)
Fixed by: https://github.com/NixOS/nix/commit/23c7a6490a829a978af1acd56d76cc2dee7f4ad6 (2.34.5)
Fixed by: https://github.com/NixOS/nix/commit/d1f2de7d683bef1e2a164f23f33172c79c7725ea (2.34.5)
Fixed by: https://github.com/NixOS/nix/commit/2f13ee6dc4ade1d919c14757891d5d8a1001eee8 (2.34.5)
CVE exists for guix because the fix for CVE-2024-27297 introduces the issue.
EPSS
Связанные уязвимости
Nix is a package manager for Linux and other Unix systems. A bug in the fix for CVE-2024-27297 allowed for arbitrary overwrites of files writable by the Nix process orchestrating the builds (typically the Nix daemon running as root in multi-user installations) by following symlinks during fixed-output derivation output registration. This affects sandboxed Linux builds - sandboxed macOS builds are unaffected. The location of the temporary output used for the output copy was located inside the build chroot. A symlink, pointing to an arbitrary location in the filesystem, could be created by the derivation builder at that path. During output registration, the Nix process (running in the host mount namespace) would follow that symlink and overwrite the destination with the derivation's output contents. In multi-user installations, this allows all users able to submit builds to the Nix daemon (allowed-users - defaulting to all users) to gain root privileges by modifying sensitive files. T...
Nix is a package manager for Linux and other Unix systems. A bug in the fix for CVE-2024-27297 allowed for arbitrary overwrites of files writable by the Nix process orchestrating the builds (typically the Nix daemon running as root in multi-user installations) by following symlinks during fixed-output derivation output registration. This affects sandboxed Linux builds - sandboxed macOS builds are unaffected. The location of the temporary output used for the output copy was located inside the build chroot. A symlink, pointing to an arbitrary location in the filesystem, could be created by the derivation builder at that path. During output registration, the Nix process (running in the host mount namespace) would follow that symlink and overwrite the destination with the derivation's output contents. In multi-user installations, this allows all users able to submit builds to the Nix daemon (allowed-users - defaulting to all users) to gain root privileges by modifying sensitive files. This
Уязвимость пакетного менеджера Nix операционных систем Unix, связанная с неверным определением ссылки перед доступом к файлу, позволяющая нарушителю получить права администратора
EPSS