registry / Credential exfiltration / @reason-machines/cli-linux-arm64 / 0.2.338

@reason-machines/cli-linux-arm64@0.2.338

Reason CLI native binary for linux-arm64

AI Security Review

scanned 6d ago · by lpm-firewall-ai

The package performs a default-on transfer of saved third-party access tokens to a publisher-selected service. That concrete credential disclosure supports blocking publication despite the endpoint being package-aligned.

Static reason

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

Trigger

Starting the worker with localLogins enabled; the CLI defaults this option on when no API key is supplied.

Impact

The Reason service receives reusable access tokens for third-party accounts, exposing those accounts to the recipient.

Mechanism

A recurring handoff reads local authentication stores and submits each access token to the local-subscription endpoint.

Attack narrative

The CLI reads saved OAuth access tokens from local coding-agent authentication stores. Its worker enables local-login handoff by default and periodically submits those tokens to the Reason API's local-subscription route. The recipient is the package vendor's service, while the credentials authenticate to separate providers; the inspected source shows no recipient-specific opt-in protecting this transfer.

AI rationale

Evidence

bin/vm-hands/vm-hands-entry-lite-f2bcqmvr.jsbin/vm-hands/vm-hands-entry-lite-png3h0cm.js.lpm-inspection-E7lDo3/0-ee850395725e.txt~/.claude/.credentials.json~/.codex/auth.json~/.grok/auth.json~/.local/share/opencode/auth.json~/.pi/agent/auth.json

Network endpoints1

api.reasonmachines.ai/app/local-runtime/local-subscription

Decision evidence

public snapshot

AI called this Malicious at 94.0% confidence as Malware with low false-positive risk.

Evidence for block

The CLI gathers saved access tokens from local Claude, Codex, Grok, OpenCode, and Pi authentication stores.
When the worker starts, it enables local-login handoff by default unless an API key or explicit setting changes that behavior.
The handoff repeatedly sends each gathered login through the worker client's localSubscription method.
That method passes the token object as the request body to the /app/local-runtime/local-subscription route on the Reason API.
The production API host is api.reasonmachines.ai; the transferred credentials belong to separate authentication services.

Evidence against

The destination is the package vendor's Reason API, and the handoff is described as a product feature.
package.json has no lifecycle scripts, so this transfer is not triggered by npm installation.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShell

Source & flagged code

24 flagged

bin/runtime/srt/sandbox-runtime.mjsView file

60mux backend dial failed (${H}) L61: `)}),M.on("error",()=>O.destroy()),M.once("close",()=>O.destroy()),O.once("close",()=>M.destroy()),M.pipe(O),O.pipe(M)}let U=$6((M)=>{G.add(M),M.once("close",()=>G.delete(M)),M.on(... L62: `).filter(Boolean);if(F===1)return[];throw Error(`ripgrep failed with exit code ${F}: ${q}`)}import{join as V0,dirname as T6}from"path";import{fileURLToPath as S6}from"url";import*...

High

Child Process

Package source references child process execution.

bin/runtime/srt/sandbox-runtime.mjsView on unpkg · L60

55\r L56: `)}}),J.on("request",async(Q,Y)=>{Q.on("error",(G)=>{Z(`Client request error: ${G.message}`,{level:"error"})}),Y.on("error",(G)=>{Z(`Client response error: ${G.message}`,{level:"er... L57: `)),$.end(eq(W))}function L7($){return Buffer.from([5,$,0,1,0,0,0,0,0,0])}function tq($){return new Promise((J)=>{let X=Buffer.alloc(0),Q=(W)=>{$.off("data",G),clearTimeout(Y),J(W)... ... L60: mux backend dial failed (${H}) L61: `)}),M.on("error",()=>O.destroy()),M.once("close",()=>O.destroy()),O.once("close",()=>M.destroy()),M.pipe(O),O.pipe(M)}let U=$6((M)=>{G.add(M),M.once("close",()=>G.delete(M)),M.on(... L62: `).filter(Boolean);if(F===1)return[];throw Error(`ripgrep failed with exit code ${F}: ${q}`)}import{join as V0,dirname as T6}from"path";import{fileURLToPath as S6}from"url";import*

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

bin/runtime/srt/sandbox-runtime.mjsView on unpkg · L55

47\r L48: Connection blocked by network allowlist`);return}if(W||Y.destroyed){Y.destroy();return}let P=jJ(j)??j;if($.mitmCA&&($.shouldTerminateTLS?.(P,C)??!0)){Y.write(`HTTP/1.1 200 Connecti... L49: \r ... L55: \r L56: `)}}),J.on("request",async(Q,Y)=>{Q.on("error",(G)=>{Z(`Client request error: ${G.message}`,{level:"error"})}),Y.on("error",(G)=>{Z(`Client response error: ${G.message}`,{level:"er... L57: `)),$.end(eq(W))}function L7($){return Buffer.from([5,$,0,1,0,0,0,0,0,0])}function tq($){return new Promise((J)=>{let X=Buffer.alloc(0),Q=(W)=>{$.off("data",G),clearTimeout(Y),J(W)... ... L60: mux backend dial failed (${H}) L61: `)}),M.on("error",()=>O.destroy()),M.once("close",()=>O.destroy()),O.once("close",()=>M.destroy()),M.pipe(O),O.pipe(M)}let U=$6((M)=>{G.add(M),M.once("close",()

High

Command Output Exfiltration

Source combines command execution, command-output handling, and outbound requests; review data flow before blocking.

bin/runtime/srt/sandbox-runtime.mjsView on unpkg · L47

bin/vm-hands/vm-hands-entry-lite-f2bcqmvr.jsView file

Lines 81-121javascript

81`);let K0=b9($,f,{displayVideo:f["display.stream.v1"]===!0&&await N(),handsBrowser:f["hands.connect"]===!0&&H,userChrome:i&&"host"in i?i.host:null,...T===void 0?{}:{githubSignedIn:T},persistentTerminals:f["pty.start"]===!0&&h2(),probing:a});if(!D&&K0.worker.readiness?.["browser.pr-proof.v1"]===!0){let z0=await OJ();if(D||j.signal.aborted)return K0;process.stderr.write("error"in z0?`Reason worker: PR video proof unavailable (${z0.error})

82`:`Reason worker: PR video proof ready (ffmpeg ${z0.encoder.ffmpeg.path})

83`),D=zJ({assertCurrent:async()=>{if(!k())throw Error("proof_authority_lost")},...!("error"in z0)?{recording:z0}:{}})}return K0},F=await O(M,q?U9.filter((f)=>M[f]!==!0):[]),z=x9($,J,F,D?.capability);X.onStartup?.("inventory_completed");let L=!1,W=0,R=0,E="starting",I=null,C=!1,h=!1,S=null,y,l=()=>!G.drained&&Date.parse(Y)>Date.now()&&z.supported_operations.some((f)=>F.worker.readiness?.[f]===!0),k=()=>!L&&l(),P=null,x=()=>W+(P?.claims()??0),A=null,w=new Set,b=(f)=>{let a=f.capabilities.root_paths;if(Object.assign(f.capabilities,x9(f.config,f.state,F,D?.capability)),a)f.capabilities.root_paths=a ...

bin/vm-hands/vm-hands-entry-lite-samn6qm5.jsView file

Lines 1-21javascript

1// @bun

2import{ri as s}from"./vm-hands-entry-lite-9n6m4qgf.js";var mc={};s(mc,{xor:()=>Zl,xid:()=>kl,void:()=>Bl,

bin/vm-hands/vm-hands-entry-lite-t2q10vjr.jsView file

Lines 1-4javascript

1// @bun

2import{Rb as D}from"./vm-hands-entry-lite-h01d2fbm.js";import{ni as j}from"./vm-hands-entry-lite-y4nntb2w.js";import{statSync as i}from"fs";import{delimiter as

bin/vm-hands/index-n922jg9n.jsView file

1// @bun L2: import{P as iJ0}from"./vm-hands-entry-lite-rhpmp59p.js";import{oi as NV0,pi as rn,qi as EJ,si as an,ti as X0}from"./vm-hands-entry-lite-9n6m4qgf.js";var on={};var $T;var WT=an(()=>... L3: `)!=-1,q=this._styles,O=q.length;while(O--){var E=G[q[O]];if(A=E.open+A.replace(E.closeRe,E.open)+E.close,R)A=A.replace($,function(D){return E.close+D+E.open})}return A}X.setTheme=... L4: `).join(` L5: `+N),U.push(z+"m+"+Y.exports.humanize(this.diff)+"\x1B[0m")}else U[0]=$()+M+" "+U[0]}function $(){if(Q.inspectOpts.hideDate)return"";return new Date().toISOString()+" "}function W(... L6: `)}function K(U){if(U)process.env.DEBUG=U;else delete process.env.DEBUG}function H(){return process.env.DEBUG}function B(U){U.inspectOpts={};let M=Object.keys(Q.inspectOpts);for(le... ... L8: `:` L9: `,U=B.

Critical

Remote Asset Decode Execute

Source fetches a remote non-code asset, decodes its contents, and dynamically executes the decoded payload.

bin/vm-hands/index-n922jg9n.jsView on unpkg · L1

239`,CHAR_NO_BREAK_SPACE:"\xA0",CHAR_PERCENT:"%",CHAR_PLUS:"+",CHAR_QUESTION_MARK:"?",CHAR_RIGHT_ANGLE_BRACKET:">",CHAR_RIGHT_CURLY_BRACE:"}",CHAR_RIGHT_SQUARE_BRACKET:"]",CHAR_SEMICO... L240: GFS4: `),console.error(A)};if(!X[W]){if(U=global[W]||[],B(X,U),X.close=function(A){function R(q,O){return A.call(X,q,function(E){if(!E)z();if(typeof O==="function")O.apply(this,arg... L241: `:""},this._extScope=S,this._scope=new X.Scope({parent:S}),this._nodes=[new F]}toString(){return this._root.render(this.opts)}name(S){return this._scope.name(S)}scopeName(S){return...

High

Obfuscated Payload Loader

Source contains an obfuscated payload loader that reconstructs and executes hidden code.

bin/vm-hands/index-n922jg9n.jsView on unpkg · L239

bin/vm-hands/vm-hands-executor-wz80d281.jsView file

1Cross-file remote execution chain: bin/vm-hands/vm-hands-executor-wz80d281.js spawns bin/vm-hands/vm-hands-entry-lite-6cj7s7rc.js; helper contains network access plus dynamic code execution. L1: // @bun L2: import{a as Tq}from"./vm-hands-entry-lite-h9jdthmf.js";import{$a as Lq,Fb as Uq,Ha as Bq,Jb as Fq}from"./vm-hands-entry-lite-me8b4f14.js";import"./vm-hands-entry-lite-h01d2fbm.js";... L3: `).filter(Boolean);K=Z.length;let W=$.map((T)=>{try{return Number(JSON.parse(T).elapsed_ms)||0}catch{return 0}});if(W.length)X("vm_hands.srt_server_starts",{count:W.length,elapsed_... L4: `).filter(Boolean).slice(0,1000);if(!W.length)return null;let T={},L=0;for(let w of W)try{let R=JSON.parse(w),B=typeof R.code==="string"&&/^[a-z_]{1,40}$/.test(R.code)?R.code:"othe... L5: `).find((O)=>O.startsWith("0:

High

Cross File Remote Execution Context

Source spawns a local helper that also contains network and dynamic execution context; review data flow before blocking.

bin/vm-hands/vm-hands-executor-wz80d281.jsView on unpkg · L1

bin/araView file

•path = bin/ara kind = native_binary sizeBytes = 102869136 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

bin/araView on unpkg

bin/vm-hands/ask-relay-ak0qxs4j.jsView file

•matchType = normalized_sha256 matchedPackage = @reason-machines/cli-linux-arm64-musl@0.2.338 matchedPath = bin/vm-hands/ask-relay-ak0qxs4j.js matchedIdentity = npm:[redacted]:0.2.338 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High