Описание
os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink.
Пакеты
| Пакет | Статус | Версия исправления | Релиз | Тип |
|---|---|---|---|---|
| golang-1.24 | not-affected | package | ||
| golang-1.23 | not-affected | package | ||
| golang-1.19 | not-affected | package | ||
| golang-1.15 | not-affected | package |
Примечания
https://github.com/golang/go/issues/73702
Fixed by: https://github.com/golang/go/commit/9f9cf28f8fe67e6c17123cae2d89f116504f2be1 (go1.24.4)
Fixed by: https://github.com/golang/go/commit/c2c89d95516d2a6b51aa1766ed5f76e542ab282c (go1.23.10)
Связанные уязвимости
os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink.
os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink.
Inconsistent handling of O_CREATE|O_EXCL on Unix and Windows in os in syscall
os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink.
Уязвимость языка программирования Golang, связанная с неверным определением символических ссылок перед доступом к файлу, позволяющая нарушителю повысить привилегии в системе