Sudo Timestamp Cache Manipulation Detected
This rule detects attempts to manipulate the sudo timestamp cache by looking for repeated 'sudo -n' commands within a short timeframe. The 'sudo -n' command allows sudo to run a command without prompting for a password, which can be abused by an attacker to maintain sudo privileges or bypass re-authentication if they have already compromised a user's session. The thresholding mechanism (10 times in 30 seconds from the same source IP) aims to reduce false positives from legitimate, infrequent uses of 'sudo -n' and focus on potential automated or rapid attempts to interact with sudo without password prompts, possibly to keep the timestamp alive or to quickly execute multiple commands.
Suricata
