6.7

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2025-69257

CVE-2025-69257: theshit vulnerable to unsafe loading of user-owned Python rules when running as root.

theshit is a command-line utility that automatically detects and fixes common mistakes in shell commands. Prior to version 0.1.1, the application loads custom Python rules and configuration files from user-writable locations (e.g., ~/.config/theshit/) without validating ownership or permissions when executed with elevated privileges. If the tool is invoked with sudo or otherwise runs with an effective UID of root, it continues to trust configuration files originating from the unprivileged user's environment. This allows a local attacker to inject arbitrary Python code via a malicious rule or configuration file, which is then executed with root privileges. Any system where this tool is executed with elevated privileges is affected. In environments where the tool is permitted to run via sudo without a password (NOPASSWD), a local unprivileged user can escalate privileges to root without additional interaction. The issue has been fixed in version 0.1.1. The patch introduces strict ownership and permission checks for all configuration files and custom rules. The application now enforces that rules are only loaded if they are owned by the effective user executing the tool. When executed with elevated privileges (EUID=0), the application refuses to load any files that are not owned by root or that are writable by non-root users. When executed as a non-root user, it similarly refuses to load rules owned by other users. This prevents both vertical and horizontal privilege escalation via execution of untrusted code. If upgrading is not possible, users should avoid executing the application with sudo or as the root user. As a temporary mitigation, ensure that directories containing custom rules and configuration files are owned by root and are not writable by non-root users. Administrators may also audit existing custom rules before running the tool with elevated privileges.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2025-69257

CVE-2025-69257:

6.7

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
theshit	rust	< 0.1.1	0.1.1

Technical Details

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Miggo AI

Root Cause Analysis

The security vulnerability is a local privilege escalation in the theshit rust application. It stems from the unsafe loading of user-provided Python rules when the application is run with root privileges. The patch, introduced in version 0.1.1, addresses this by adding strict ownership and permission checks.

The analysis of the commits, specifically 3dc12905cafb5fd47fff4071a05c231f925ac113, reveals the core of the vulnerability. The changes are concentrated in src/fix/python.rs. A new function, check_security, was introduced to verify that the rule files are owned by the effective user ID and are not writable by other users. This function is now called within process_python_rules for each rule before it is processed.

The vulnerable function is identified as theshit::fix::python::process_python_rules. Prior to the patch, this function would iterate through rule paths and load them without any security validation. This meant that if a local user created a malicious Python script and theshit was run as root, the script would be executed with root privileges. The introduction of the check_security call directly within this function in the patch is clear evidence that this is where the vulnerability was located. During exploitation, a profiler would show theshit::fix::python::process_python_rules in the stack trace as it processes the malicious rule file.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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