#TIL in Linux, the SUID (Set User ID) bit is a special file permission that allows a binary to run with the privileges of the file’s owner rather than the user who executed it. This feature is useful for tasks that require elevated permissions, like allowing regular users to perform specific administrative functions.
However, SUID binaries also pose a security risk. If a SUID binary is improperly configured or contains vulnerabilities, an attacker with limited privileges could exploit it to escalate their privileges, potentially gaining root access. This makes it crucial to regularly audit SUID binaries on your system.
To find SUID binaries, use:
find / -type f -perm -4000 -ls 2>/dev/null
#linux #security #cybersecurity #suid #LeastPrivilege #debian