CVE-2025-69257: Oh theshit! From Typo Fixer to Root Shell via Python Injection

Oh theshit! From Typo Fixer to Root Shell via Python Injection

Vulnerability ID: CVE-2025-69257
CVSS Score: 6.7
Published: 2025-12-30

A classic Local Privilege Escalation (LPE) in the 'theshit' command correction utility, allowing unprivileged users to execute arbitrary Python code as root due to unsafe loading of user configuration files.

TL;DR

The command-line tool theshit loads custom Python rule files from the user's configuration directory. Prior to version 0.1.1, it failed to verify file ownership when running with elevated privileges (e.g., via sudo). An attacker can place a malicious Python script in their own config folder, wait for an administrator to run the tool to fix a command, and achieve immediate root code execution.

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⚠️ Exploit Status: POC

Technical Details

• CWE ID: CWE-269
• Attack Vector: Local (AV:L)
• CVSS: 6.7 (Medium)
• Impact: Privilege Escalation (Root)
• Component: Python Rule Loader
• Exploit Status: High Probability / Trivial

Affected Systems

• Linux systems with theshit installed
• macOS systems with theshit installed
• theshit: < 0.1.1 (Fixed in: 0.1.1)

Code Analysis

Commit: 3dc1290

fix: check file owner and permission before loading python rule

+ fn check_security(path: &Path) -> Result<()> {
+     let metadata = fs::metadata(path)?;
+     if unsafe { libc::geteuid() } != metadata.uid() {
+         return Err(anyhow!("Security risk"));
+     }
+ }

Exploit Details

• Manual Analysis: Commit analysis reveals trivial Python injection vector

Mitigation Strategies

• Input Validation
• Privilege Dropping
• File Integrity Checks

Remediation Steps:

1. Upgrade theshit to version 0.1.1 immediately.
2. Audit ~/.config/theshit/rules/ for suspicious Python scripts.
3. Remove sudo privileges for this utility if granted via /etc/sudoers.

References

• Vendor Repository

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Read the full report for CVE-2025-69257 on our website for more details including interactive diagrams and full exploit analysis.