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siesa-agents@2.1.104: AI-agent control-surface risk | LPM Firewall

registry / siesa-agents / 2.1.104

siesa-agents@2.1.104

Paquete para instalar y configurar agentes SIESA en tu proyecto

AI Security Review

scanned 16d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. An npm postinstall runs an installer without an explicit user command. It overwrites broad consumer-project AI-agent and developer control surfaces and clones a remote repository.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review

Trigger

Installing the package through npm activates postinstall.

Impact

Package installation can alter agent instructions, MCP configuration, editor settings, and repository state in the consumer project.

Mechanism

The installer maps shipped content into .claude, .gemini, .mcp.json, .vscode, and .github with overwrite enabled, then runs Git commands and clones an external repository.

Policy narrative

A normal npm install invokes bin/install.js automatically. That code copies package-controlled material over broad project control surfaces used by AI agents and developer tooling, then initializes or modifies Git state and clones remote content. These actions occur before the user invokes the advertised CLI, so the lifecycle hook can influence the consumer project's agent configuration without consent.

AI rationale

The automatic postinstall performs unconsented, overwrite-enabled mutation of broad AI-agent control surfaces. This is concrete install-hook abuse under the stated policy.

Evidence

package.jsonbin/install.jsbin/folder-mappings.js.claude.gemini.mcp.json.vscode.github_bmad-output/design-artifacts

Source & flagged code

20 flagged · loading source

package.jsonView file

•scripts.postinstall = node ./bin/install.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node ./bin/install.js

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

claude/commands/get-features/oauth-login.jsView file

13L14: const http = require('http'); L15: const https = require('https'); L16: const { exec } = require('child_process'); L17: const fs = require('fs'); ... L21: // Load shared configuration L22: const config = JSON.parse(fs.readFileSync(path.join(__dirname, 'oauth-config.json'))); L23: ... L42: function openBrowser(url) { L43: const platform = process.platform; L44: if (platform === 'win32') { ... L77: req.on('error', reject);

High

Sandbox Evasion Gated Capability

Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.

claude/commands/get-features/oauth-login.jsView on unpkg · L13

•matchType = normalized_sha256 matchedPackage = siesa-agents@2.1.101 matchedPath = claude/commands/get-features/oauth-login.js matchedIdentity = npm:c2llc2EtYWdlbnRz:2.1.101 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

claude/commands/get-features/oauth-login.jsView on unpkg

bin/install.jsView file

68// reemplazan completos (no se hace merge elemento-a-elemento). Pensado para L69: // `.mcp.json`: los MCPs que el usuario agregó (no existen en el paquete) sobreviven L70: // al update mientras los nativos se actualizan a la versión del paquete. ... L239: 'node_modules/', L240: '.claude/commands/get-features/oauth-config.json', L241: '.claude/commands/get-features/tokens.json', L242: '.vscode/settings.json', L243: '.claude.json' L244: ]; ... L261: L262: await fs.writeFile(gitignorePath, content, 'utf8'); L263: console.log('✓ .gitignore instalado correctamente.');

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

bin/install.jsView on unpkg · L68

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. esolve(__dirname, '..', '..', 'siesa-agents'), path.resolve(__dirname.replace(/\\bin$|\/bin$/, '')), process.cwd(), ]; for (const possiblepath of possiblepaths) { if (this.hasrequiredfolders(possiblepath)) { packagedir = possiblepath; if (debug) { console.log(` encontrado en: ${possiblepath}`); } break; } } } return packagedir; } hasrequiredfolders(dir) { return this.foldermappings.some(mapping => { const folderpath =

High

Trigger Reachable External Ai Agent Control Surface Mutation

Manifest-trigger-reachable source writes behavior-bearing configuration into a user or project AI-agent control surface.

bin/install.jsView on unpkg

siesa-agents/sa/sa-skills-creator/skill-creator/eval-viewer/generate_review.pyView file

•path = siesa-agents/sa/sa-sk[redacted]/skill-creator/eval-viewer/generate_review.py kind = build_helper sizeBytes = 16365 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

siesa-agents/sa/sa-skills-creator/skill-creator/eval-viewer/generate_review.pyView on unpkg

claude/skills/bmad-customize/scripts/tests/test_list_customizable_skills.pyView file

•path = claude/skills/bmad-customize/scripts/tests/test_list_customizable_skills.py kind = payload_in_excluded_dir sizeBytes = 9245 magicHex = [redacted]

High

Payload In Excluded Dir

Package hides binary, compressed, or executable-looking payloads in test/fixture/hidden paths.

claude/skills/bmad-customize/scripts/tests/test_list_customizable_skills.pyView on unpkg

siesa-agents/observability/scripts/sa-init-env.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 3

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

siesa-agents/observability/scripts/sa-init-env.js#virtual:normalized:round1View on unpkg

siesa-agents/observability/scripts/sa-emit.jsView file

•matchType = normalized_sha256 matchedPackage = siesa-agents@2.1.101 matchedPath = siesa-agents/observability/scripts/sa-emit.js matchedIdentity = npm:c2llc2EtYWdlbnRz:2.1.101 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

siesa-agents/observability/scripts/sa-emit.jsView on unpkg

siesa-agents/observability/scripts/sa-init-project.jsView file

•matchType = normalized_sha256 matchedPackage = siesa-agents@2.1.101 matchedPath = siesa-agents/observability/scripts/sa-init-project.js matchedIdentity = npm:c2llc2EtYWdlbnRz:2.1.101 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

siesa-agents/observability/scripts/sa-init-project.jsView on unpkg

siesa-agents/sa/sa-init-devops/scripts/sa-init-devops.jsView file

•matchType = normalized_sha256 matchedPackage = siesa-agents@2.1.101 matchedPath = siesa-agents/sa/sa-init-devops/scripts/sa-init-devops.js matchedIdentity = npm:c2llc2EtYWdlbnRz:2.1.101 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

siesa-agents/sa/sa-init-devops/scripts/sa-init-devops.jsView on unpkg

siesa-agents/observability/scripts/sa-init-env.jsView file

•matchType = normalized_sha256 matchedPackage = siesa-agents@2.1.101 matchedPath = siesa-agents/observability/scripts/sa-init-env.js matchedIdentity = npm:c2llc2EtYWdlbnRz:2.1.101 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

siesa-agents/observability/scripts/sa-init-env.jsView on unpkg

siesa-agents/scripts/jira/refresh-token.jsView file

•matchType = normalized_sha256 matchedPackage = siesa-agents@2.1.101 matchedPath = siesa-agents/scripts/jira/refresh-token.js matchedIdentity = npm:c2llc2EtYWdlbnRz:2.1.101 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

siesa-agents/scripts/jira/refresh-token.jsView on unpkg

siesa-agents/scripts/phases/phase1.jsView file

•matchType = normalized_sha256 matchedPackage = siesa-agents@2.1.101 matchedPath = siesa-agents/scripts/phases/phase1.js matchedIdentity = npm:c2llc2EtYWdlbnRz:2.1.101 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

siesa-agents/scripts/phases/phase1.jsView on unpkg

siesa-agents/scripts/phases/phase2.jsView file

•matchType = normalized_sha256 matchedPackage = siesa-agents@2.1.101 matchedPath = siesa-agents/scripts/phases/phase1.js matchedIdentity = npm:c2llc2EtYWdlbnRz:2.1.101 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

siesa-agents/scripts/phases/phase2.jsView on unpkg

siesa-agents/scripts/phases/phase3.jsView file

•matchType = normalized_sha256 matchedPackage = siesa-agents@2.1.101 matchedPath = siesa-agents/scripts/phases/phase1.js matchedIdentity = npm:c2llc2EtYWdlbnRz:2.1.101 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

siesa-agents/scripts/phases/phase3.jsView on unpkg

siesa-agents/scripts/jira/lib/jira-client.jsView file

•matchType = normalized_sha256 matchedPackage = siesa-agents@2.1.101 matchedPath = siesa-agents/scripts/jira/lib/jira-client.js matchedIdentity = npm:c2llc2EtYWdlbnRz:2.1.101 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

siesa-agents/scripts/jira/lib/jira-client.jsView on unpkg