Описание
The install utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file installation. The implementation unlinks an existing destination file and then recreates it using a path-based operation without the O_EXCL flag. A local attacker can exploit the window between the unlink and the subsequent creation to swap the path with a symbolic link, allowing them to redirect privileged writes to overwrite arbitrary system files.
Ссылки
- ExploitIssue TrackingPatch
- Release Notes
- ExploitIssue TrackingPatch
Уязвимые конфигурации
EPSS
6.3 Medium
CVSS3
Дефекты
Связанные уязвимости
The install utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file installation. The implementation unlinks an existing destination file and then recreates it using a path-based operation without the O_EXCL flag. A local attacker can exploit the window between the unlink and the subsequent creation to swap the path with a symbolic link, allowing them to redirect privileged writes to overwrite arbitrary system files.
The install utility in uutils coreutils is vulnerable to a Time-of-Che ...
install: TOCTOU symlink race (unlink-then-create without O_EXCL) allows arbitrary file overwrite
EPSS
6.3 Medium
CVSS3