ReddRadar
Agent skill
performing-privilege-escalation-on-linux
Linux privilege escalation involves elevating from a low-privilege user account to root access on a compromised system. Red teams exploit misconfigurations, vulnerable services, kernel exploits, and w
Install this agent skill to your Project
npx add-skill https://github.com/autohandai/community-skills/tree/main/performing-privilege-escalation-on-linux
SKILL.md
Performing Privilege Escalation on Linux
Overview
Linux privilege escalation involves elevating from a low-privilege user account to root access on a compromised system. Red teams exploit misconfigurations, vulnerable services, kernel exploits, and weak permissions to achieve root. This skill covers both manual enumeration techniques and automated tools for identifying and exploiting privilege escalation vectors.
MITRE ATT&CK Mapping
- T1548.001 - Abuse Elevation Control Mechanism: Setuid and Setgid
- T1548.003 - Abuse Elevation Control Mechanism: Sudo and Sudo Caching
- T1068 - Exploitation for Privilege Escalation
- T1574.006 - Hijack Execution Flow: Dynamic Linker Hijacking
- T1053.003 - Scheduled Task/Job: Cron
- T1543.002 - Create or Modify System Process: Systemd Service
Key Escalation Vectors
SUID/SGID Binaries
- Find SUID binaries:
find / -perm -4000 -type f 2>/dev/null - Check GTFOBins for exploitation methods
- Custom SUID binaries may have vulnerabilities
Sudo Misconfigurations
sudo -lto list allowed commands- Wildcards in sudo rules allow injection
- NOPASSWD entries for dangerous commands
- sudo versions vulnerable to CVE-2021-3156 (Baron Samedit)
Kernel Exploits
- Dirty Cow (CVE-2016-5195) for older kernels
- Dirty Pipe (CVE-2022-0847) for kernel 5.8+
- PwnKit (CVE-2021-4034) for pkexec
- GameOver(lay) (CVE-2023-2640, CVE-2023-32629) for Ubuntu
Cron Job Abuse
- World-writable cron scripts
- PATH hijacking in cron jobs
- Wildcard injection in cron commands
Capabilities
getcap -r / 2>/dev/nullto find binaries with capabilities- cap_setuid allows UID manipulation
- cap_dac_override bypasses file permissions
Writable Service Files
- Systemd unit files with weak permissions
- Init scripts writable by non-root users
- Socket files in accessible locations
Tools and Resources
| Tool | Purpose |
|---|---|
| LinPEAS | Automated privilege escalation enumeration |
| LinEnum | Linux enumeration script |
| linux-exploit-suggester | Kernel exploit matching |
| pspy | Process monitoring without root |
| GTFOBins | SUID/sudo binary exploitation reference |
| PEASS-ng | Privilege escalation awesome scripts suite |
Validation Criteria
- Enumeration performed using automated tools
- Privilege escalation vector identified
- Root access achieved through identified vector
- Evidence documented (screenshots, command output)
- Alternative escalation paths identified
Recommended Agent Skills
Expand your agent's capabilities with these related and highly-rated skills.
autohandai/community-skills
mapping-mitre-attack-techniques
Maps observed adversary behaviors, security alerts, and detection rules to MITRE ATT&CK techniques and sub-techniques to quantify detection coverage and guide control prioritization. Use when building an ATT&CK-based coverage heatmap, tagging SIEM alerts with technique IDs, aligning security controls to adversary playbooks, or reporting threat exposure to executives. Activates for requests involving ATT&CK Navigator, Sigma rules, MITRE D3FEND, or coverage gap analysis.
autohandai/community-skills
hunting-for-spearphishing-indicators
Hunt for spearphishing campaign indicators across email logs, endpoint telemetry, and network data to detect targeted email attacks.
autohandai/community-skills
analyzing-malicious-url-with-urlscan
URLScan.io is a free service for scanning and analyzing suspicious URLs. It captures screenshots, DOM content, HTTP transactions, JavaScript behavior, and network connections of web pages in an isolat
autohandai/community-skills
implementing-zero-standing-privilege-with-cyberark
Deploy CyberArk Secure Cloud Access to eliminate standing privileges in hybrid and multi-cloud environments using just-in-time access with time, entitlement, and approval controls.
autohandai/community-skills
implementing-pam-for-database-access
Deploy privileged access management for database systems including Oracle, SQL Server, PostgreSQL, and MySQL. Covers session proxy configuration, credential vaulting, query auditing, dynamic credentia
autohandai/community-skills
detecting-t1003-credential-dumping-with-edr
Detect OS credential dumping techniques targeting LSASS memory, SAM database, NTDS.dit, and cached credentials using EDR telemetry, Sysmon process access monitoring, and Windows security event correlation.
Didn't find tool you were looking for?