GSD-2023-26920
Vulnerability from gsd - Updated: 2023-12-13 01:20Details
fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2023-26920",
"id": "GSD-2023-26920"
},
"gsd": {
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"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
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"details": "fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.",
"id": "GSD-2023-26920",
"modified": "2023-12-13T01:20:53.863488Z",
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"value": "fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution."
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"name": "https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7",
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"url": "https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7"
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"name": "https://github.com/advisories/GHSA-793h-6f7r-6qvm",
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"url": "https://github.com/advisories/GHSA-793h-6f7r-6qvm"
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"name": "https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804",
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"url": "https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804"
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"gitlab.com": {
"advisories": [
{
"affected_range": "\u003c4.1.2",
"affected_versions": "All versions before 4.1.2",
"cwe_ids": [
"CWE-1035",
"CWE-937"
],
"date": "2023-06-13",
"description": "### Impact\nAs a part of this vulnerability, user was able to se code using `__proto__` as a tag or attribute name.\n\n```js\nconst { XMLParser, XMLBuilder, XMLValidator} = require(\"fast-xml-parser\");\n\nlet XMLdata = \"\u003c__proto__\u003e\u003cpolluted\u003ehacked\u003c/polluted\u003e\u003c/__proto__\u003e\"\n\nconst parser = new XMLParser();\nlet jObj = parser.parse(XMLdata);\n\nconsole.log(jObj.polluted) // should return hacked\n``` \n\n### Patches\nThe problem has been patched in v4.1.2\n\n### Workarounds\nUser can check for \"__proto__\" in the XML string before parsing it to the parser.\n\n### References\nhttps://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7\n",
"fixed_versions": [
"4.1.2"
],
"identifier": "CVE-2023-26920",
"identifiers": [
"GHSA-x3cc-x39p-42qx",
"CVE-2023-26920"
],
"not_impacted": "All versions starting from 4.1.2",
"package_slug": "npm/fast-xml-parser",
"pubdate": "2023-06-13",
"solution": "Upgrade to version 4.1.2 or above.",
"title": "fast-xml-parser vulnerable to Prototype Pollution through tag or attribute name",
"urls": [
"https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-x3cc-x39p-42qx",
"https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804",
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"uuid": "f8e9869c-de84-4b47-ad79-93a11e5592a3"
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"value": "fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution."
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"value": "fast-xml-parser anterior a 4.1.2 permite __proto__ para Prototype Pollution."
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"id": "CVE-2023-26920",
"lastModified": "2023-12-14T20:41:19.917",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
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"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
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"published": "2023-12-12T17:15:07.720",
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"url": "https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7"
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"value": "CWE-1321"
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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