hunting-dynamic-linker-hijacks SKILL.md skillA
hunting-dynamic-linker-hijacks from unboundcompute/security-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add unboundcompute/security-agent-skills/hunting-dynamic-linker-hijacks@git:20260819.61df029Pins git:20260819.61df029 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- unboundcompute/security-agent-skills
- Path
skills/hunting-dynamic-linker-hijacks/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260819.61df029, committed Aug 19, 2026
- Size
- 9,604 bytes
- Repository stars
- 26
- License
- MIT
Hunt local privilege escalation and code execution through the dynamic loader: a preload environment variable honored across a privilege boundary, a writable directory on the runtime library search path, an embedded run-path that points at a writable or origin-relative location, and libraries loaded by an unqualified name. Covers preload variables that survive a privilege transition through a service manager or delegation rule, world- or group-writable library directories a privileged binary…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Hunting dynamic-linker hijacks: the binary is fine, its search path is not A trusted program can be perfectly written and still run your code, because it does not choose most of the code it executes: the dynamic loader does, resolving library dependencies at startup and on demand from a search path and a set of environment variables. If any input to that resolution crosses a privilege boundary under attacker influence - a preload variable the privileged process still honors, a writable directory on its search path, a run-path relative to a location you can write - the loader maps your library into the privileged process and runs your initializer as its identity. You find it by asking, for each privileged binary, where the loader looks for code and which of those places an attacker can control. ## When to use - You are auditing a privileged binary, service, container image, or package for local escalation. - Programs run as a more privileged identity and load libraries dynamically. - The launch environment, library search path, or embedded run-path may be attacker-influenced. ## Scope check …
Read the whole file at its exact version.
How to install
mdr add unboundcompute/security-agent-skills/hunting-dynamic-linker-hijacks@sha256:069e26df80905395The line at the top of this page pins the label git:20260819.61df029, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_shxhfyzf33zlay5q)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 19, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9604 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
unboundcompute/security-agent-skills · 26 stars · license MIT · pushed 2026-09-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_shxhfyzf33zlay5q GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/hunting-dynamic-linker-hijacks GET https://markdownregistry.com/api/v1/blob/069e26df80905395c20c8a978ed67a12149b3fad0aad875d16a48bedef295f3c
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.