5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
59.2%
In detect-character-encoding v0.6.0 and earlier, data matching no charset causes the Node.js process to crash.
The problem has been patched in detect-character-encoding v0.7.0.
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 detect-character-encoding is a library, the scoring is based on the βreasonable worst-case implementation scenarioβ, namely, accepting data from untrusted sources over a network and passing it directly to detect-character-encoding. Depending on your specific implementation, the vulnerabilityβs severity in your program may be different.
const express = require("express");
const bodyParser = require("body-parser");
const detectCharacterEncoding = require("detect-character-encoding");
const app = express();
app.use(bodyParser.raw());
app.post("/", (req, res) => {
const charsetMatch = detectCharacterEncoding(req.body);
res.end(charsetMatch.encoding);
});
app.listen(3000);
printf "\xAA" | curl --request POST --header "Content-Type: application/octet-stream" --data-binary @- http://localhost:3000
crashes the server.
CPE | Name | Operator | Version |
---|---|---|---|
detect-character-encoding | lt | 0.7.0 |
github.com/advisories/GHSA-jqfh-8hw5-fqjr
github.com/sonicdoe/detect-character-encoding/commit/992a11007fff6cfd40b952150ab8d30410c4a20a
github.com/sonicdoe/detect-character-encoding/issues/15
github.com/sonicdoe/detect-character-encoding/releases/tag/v0.7.0
github.com/sonicdoe/detect-character-encoding/security/advisories/GHSA-jqfh-8hw5-fqjr
nvd.nist.gov/vuln/detail/CVE-2021-39157
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
59.2%