registry / Credential exfiltration / @reason-machines/cli-linux-arm64 / 0.2.347

@reason-machines/cli-linux-arm64@0.2.347

Reason CLI native binary for linux-arm64

AI Security Review

scanned 6d ago · by lpm-firewall-ai

Source inspection confirms that saved third-party access tokens are sent automatically to the package's service under the default configuration. This is concrete credential exfiltration behavior, so the package should be blocked.

Static reason

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

Trigger

Starting the connected worker with local logins enabled; the setting defaults to enabled when unset.

Impact

The Reason service receives access to third-party accounts through their saved access tokens.

Mechanism

The worker reads credentials from local provider stores, keeps access tokens in the handover data, and posts them to the Reason local-subscription endpoint.

Attack narrative

When the connected worker starts, its default configuration enables local login handover. It reads saved access tokens for third-party coding agents and sends them to the package's production Reason API. Although refresh tokens are removed and users can turn the feature off, the default handover sends access tokens without recipient-specific consent.

AI rationale

Evidence

bin/vm-hands/vm-hands-entry-lite-d6389xx2.jsbin/vm-hands/vm-hands-entry-lite-aexevj7j.jsbin/vm-hands/vm-hands-entry-lite-36xzwsxn.jsbin/vm-hands/vm-hands-entry-lite-1xjtcxpn.js~/.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 98.0% confidence as Malware with low false-positive risk.

Evidence for block

The worker reads saved login credentials from local provider stores and the system keychain.
It forwards provider access tokens while removing refresh tokens from the handover data.
The worker starts this handover when local logins are enabled, and the configuration helper defaults that setting to true when unset.
The client sends the handover data as the request body to its local-subscription endpoint.
The endpoint is under the package's production Reason API origin.

Evidence against

The handover excludes refresh tokens, and an explicit setting can disable local logins.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsMinifiedPossibleObfuscationUrlStrings

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-d6389xx2.jsView file

Lines 81-121javascript

81`);let B0=w9($,f,{displayVideo:f["display.stream.v1"]===!0&&await N(),handsBrowser:f["hands.connect"]===!0&&H,userChrome:i&&"host"in i?i.host:null,...T===void 0?{}:{githubSignedIn:T},persistentTerminals:f["pty.start"]===!0&&g2(),probing:a,ownComputer:X.ownComputer===!0});if(!D&&B0.worker.readiness?.["browser.pr-proof.v1"]===!0){let z0=await AJ();if(D||j.signal.aborted)return B0;process.stderr.write("error"in z0?`Reason worker: PR video proof unavailable (${z0.error})

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

83`),D=RJ({assertCurrent:async()=>{if(!w())throw Error("proof_authority_lost")},...!("error"in z0)?{recording:z0}:{}})}return B0},F=await O(M,q?V9.filter((f)=>M[f]!==!0):[]),z=S9($,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),w=()=>!L&&l(),P=null,x=()=>W+(P?.claims()??0),A=null,k=new Set,b=(f)=>{let a=f.capabilities.root_paths;if(Object.assign(f.capabilities,S9(f.config,f.state,F,D?.capability)),a)f.capabilities.root_paths=a ...

bin/vm-hands/index-t1h1wd8g.jsView file

1// @bun L2: import{Q as iJ0}from"./vm-hands-entry-lite-1jhry648.js";import{Ai as X0,vi as NV0,wi as rn,xi as EJ,zi as an}from"./vm-hands-entry-lite-mhsv58hw.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-t1h1wd8g.jsView on unpkg · L1

271`).map((J)=>J+` L272: `);if(Y)X.pop();else X.push(X.pop().slice(0,-1));return X}function is(Q){let Y=[],X,J;for(let G=0;G<Q.length;G++){if(X=Q[G],X.added)J=1;else if(X.removed)J=-1;else J=0;Y.push([J,X.... L273: `)}var V$=(Q)=>(Y,X,J,G)=>{let Z=J?Object.assign(J,{async:!1}):{async:!1},$=Y._zod.run({value:X,issues:[]},Z);if($ instanceof Promise)throw new AJ;if($.issues.length){let W=new(G?....

High

Eval

Package source references dynamic code evaluation.

bin/vm-hands/index-t1h1wd8g.jsView on unpkg · L271

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...

bin/vm-hands/vm-hands-executor-xa08wrmr.jsView file

1Cross-file remote execution chain: bin/vm-hands/vm-hands-executor-xa08wrmr.js spawns bin/vm-hands/vm-hands-entry-lite-2xh7sjs0.js; helper contains network access plus dynamic code execution. L1: // @bun L2: import{a as Mq}from"./vm-hands-entry-lite-c6vkevd0.js";import{Gb as Fq,Ia as Lq,Kb as Tq,ab as Uq}from"./vm-hands-entry-lite-5cyt4sas.js";import"./vm-hands-entry-lite-wmxksawm.js";... L3: `).filter(Boolean);B=Z.length;let Y=Q.map((L)=>{try{return Number(JSON.parse(L).elapsed_ms)||0}catch{return 0}});if(Y.length)X("vm_hands.srt_server_starts",{count:Y.length,elapsed_... L4: `).filter(Boolean).slice(0,1000);if(!Y.length)return null;let L={},F=0;for(let M of Y)try{let R=JSON.parse(M),K=typeof R.code==="string"&&/^[a-z_]{1,40}$/.test(R.code)?R.code:"othe... L5: `).find((V)=>V.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-xa08wrmr.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-r3kbaq9w.jsView file

•matchType = normalized_sha256 matchedPackage = @reason-machines/cli-linux-arm64-musl@0.2.347 matchedPath = bin/vm-hands/ask-relay-r3kbaq9w.js matchedIdentity = npm:[redacted]:0.2.347 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High