registry / Remote code execution / nottuff21
nottuff21
Republished package
This report shows the evidence for nottuff21@2.0.0. 3 of 4 known versions are blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThe direct, unpinned external script import is concrete runtime attack behavior. The browser proxy and service-worker components compound the risk; absence of npm lifecycle hooks does not mitigate page-runtime execution.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review
Trigger
A user opens or hosts `index.html`.
Impact
The remote script can execute arbitrary JavaScript in the viewer's origin and interact with page-accessible data; bundled proxy code increases request and cookie handling risk.
Mechanism
Remote browser-script execution with bundled proxy/service-worker support.
Attack narrative
The published HTML entrypoint automatically imports executable JavaScript from an unrelated external domain, making its runtime behavior remotely changeable without a package update. The same page includes a Scramjet-style proxy/controller stack, and the bundled service-worker code routes fetch events while related code synchronizes cookies. This is a concrete remote-code-execution surface for anyone opening the package's main page, not merely obfuscation or a static signature.
AI rationale
The direct, unpinned external script import is concrete runtime attack behavior. The browser proxy and service-worker components compound the risk; absence of npm lifecycle hooks does not mitigate page-runtime execution.
Evidence
index.htmlbfjdx/757lr8.jsct1tl/pap3do.jsct1tl/jmqwjq.jsj6k3y8.jspackage.json
Network endpoints1
c.vipersfutbol.com/script.js
Decision evidence
public snapshotAI called this Malicious at 96.0% confidence as Malware with low false-positive risk.
Evidence for block
- `index.html` automatically loads `https://c.vipersfutbol.com/script.js` at page runtime.
- `index.html` loads the bundled `bfjdx/757lr8.js` proxy runtime and `ct1tl/pap3do.js` controller.
- `j6k3y8.js` is a service-worker script that routes fetch events through `_19vij0x`.
- `ct1tl/jmqwjq.js` handles proxy transport and propagates proxied cookies to controlled clients.
- No lifecycle hook is needed: opening the package main page activates remote code.
Evidence against
- `package.json` defines no npm lifecycle scripts.
- No Node filesystem, child-process, or environment-secret harvesting was found in inspected source.
- The scanner's alleged critical secret is an Emscripten/libcurl runtime, not a confirmed embedded credential.
Behavioral surface
ChildProcessDynamicRequireFilesystemNetworkWebSocket
HighEntropyStringsMinifiedObfuscated
Source & flagged code
9 flagged · loading sourceassets/proxy-runtime-1NyFshf9.jsView file
1patternName = aws_access_key
severity = critical
line = 1
matchedText = var OQ=O...B+=`
Critical
Critical Secret
Package contains a critical-looking secret pattern.
assets/proxy-runtime-1NyFshf9.jsView on unpkg · L11patternName = aws_access_key
severity = critical
line = 1
matchedText = var OQ=O...B+=`
Critical
Secret Pattern
AWS access key ID in assets/proxy-runtime-1NyFshf9.js
assets/proxy-runtime-1NyFshf9.jsView on unpkg · L1bfjdx/757lr8.jsView file
17L18: //# sourceURL=${A}`)();n=c,o=l}else n=g.z$,o=g.Mt;r.construct&&(l.construct=function(e,t,i){let n,s=!1,a={fn:e,this:null,args:t,newTarget:i,return:e=>{s=!0,n=e},call:()=>(s=!0,n=o(...
L19: //# sourceURL=${r.url.href}`),n}return o.body;case"style":return(0,i.sM)(await o.text(),e.context,r.meta);case"sharedworker":case"worker":return(0,i.iP)(new Uint8Array(await o.arra...
Medium
Findings
2 Critical5 High6 Medium4 Low
CriticalCritical Secretassets/proxy-runtime-1NyFshf9.js
CriticalSecret Patternassets/proxy-runtime-1NyFshf9.js
HighObfuscated Payload Loaderassets/ChatPage-zoA8Z6RX.js
HighObfuscated
HighShips High Entropy Blobassets/KaTeX_Script-Regular-D3wIWfF6.woff2
HighKnown Malware Source Similarityassets/fingerprint-Y5nV5FVa.js
HighKnown Malware Source Fingerprint Signatureassets/ChatPage-zoA8Z6RX.js
MediumDynamic Requirebfjdx/757lr8.js
MediumNetwork
MediumProtestware
MediumShips Wasm Modulebfjdx/w7m632.wasm
MediumStructural Risk Force Deep Review
Medium
Affected versions and remediation
This report applies to nottuff21@2.0.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing nottuff21@2.0.0. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
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