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GHSA-27wq-qx3q-fxm9
No affected components available
Impact
In ced v0.1.0, passing data types other than Buffer causes the Node.js process to crash.
Patches
The problem has been patched in ced v1.0.0. You can upgrade from v0.1.0 without any breaking changes.
Workarounds
Before passing an argument to ced, verify it’s a Buffer using Buffer.isBuffer(obj).
CVSS score
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/RL:O/RC:C
Base Score: 7.5 (High) Temporal Score: 7.2 (High)
Since ced is a library, the scoring is based on the “reasonable worst-case implementation scenario”, namely, accepting data from untrusted sources over a network and passing it directly to ced. Depending on your specific implementation, the vulnerability’s severity in your program may be different.
Proof of concept
const express = require("express");
const bodyParser = require("body-parser");
const ced = require("ced");
const app = express();
app.use(bodyParser.raw());
app.post("/", (req, res) => {
const encoding = ced(req.body);
res.end(encoding);
});
app.listen(3000);
curl --request POST --header "Content-Type: text/plain" --data foo http://localhost:3000 crashes the server.
References
- https://github.com/sonicdoe/ced/commit/a4d9f10b6bf1cd468d1a5b9a283cdf437f8bb7b3
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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