GSD-2021-28965
Vulnerability from gsd - Updated: 2021-04-05 00:00Details
When parsing and serializing a crafted XML document, REXML gem (including
the one bundled with Ruby) can create a wrong XML document whose structure
is different from the original one.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-28965",
"description": "The REXML gem before 3.2.5 in Ruby before 2.6.7, 2.7.x before 2.7.3, and 3.x before 3.0.1 does not properly address XML round-trip issues. An incorrect document can be produced after parsing and serializing.",
"id": "GSD-2021-28965",
"references": [
"https://www.suse.com/security/cve/CVE-2021-28965.html",
"https://www.debian.org/security/2022/dsa-5066",
"https://access.redhat.com/errata/RHSA-2022:0582",
"https://access.redhat.com/errata/RHSA-2022:0581",
"https://access.redhat.com/errata/RHSA-2021:2588",
"https://access.redhat.com/errata/RHSA-2021:2587",
"https://access.redhat.com/errata/RHSA-2021:2584",
"https://access.redhat.com/errata/RHSA-2021:2230",
"https://access.redhat.com/errata/RHSA-2021:2229",
"https://access.redhat.com/errata/RHSA-2021:2104",
"https://ubuntu.com/security/CVE-2021-28965",
"https://advisories.mageia.org/CVE-2021-28965.html",
"https://security.archlinux.org/CVE-2021-28965",
"https://alas.aws.amazon.com/cve/html/CVE-2021-28965.html",
"https://linux.oracle.com/cve/CVE-2021-28965.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "rexml",
"purl": "pkg:gem/rexml"
}
}
],
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"CVE-2021-28965",
"GHSA-8cr8-4vfw-mr7h"
],
"details": "When parsing and serializing a crafted XML document, REXML gem (including\nthe one bundled with Ruby) can create a wrong XML document whose structure\nis different from the original one.\n",
"id": "GSD-2021-28965",
"modified": "2021-04-05T00:00:00.000Z",
"published": "2021-04-05T00:00:00.000Z",
"references": [
{
"type": "WEB",
"url": "https://www.ruby-lang.org/en/news/2021/04/05/xml-round-trip-vulnerability-in-rexml-cve-2021-28965/"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": 7.5,
"type": "CVSS_V3"
}
],
"summary": "XML round-trip vulnerability in REXML"
}
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"date": "2021-04-05",
"description": "When parsing and serializing a crafted XML document, REXML gem (including\nthe one bundled with Ruby) can create a wrong XML document whose structure\nis different from the original one.\n",
"gem": "rexml",
"ghsa": "8cr8-4vfw-mr7h",
"patched_versions": [
"~\u003e 3.1.9.1",
"~\u003e 3.2.3.1",
"\u003e= 3.2.5"
],
"title": "XML round-trip vulnerability in REXML",
"url": "https://www.ruby-lang.org/en/news/2021/04/05/xml-round-trip-vulnerability-in-rexml-cve-2021-28965/"
},
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"affected_versions": "All versions before 3.2.5",
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"cwe_ids": [
"CWE-1035",
"CWE-937"
],
"date": "2023-08-08",
"description": "The REXML gem does not properly address XML round-trip issues. An incorrect document can be produced after parsing and serializing.",
"fixed_versions": [
"3.2.5"
],
"identifier": "CVE-2021-28965",
"identifiers": [
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],
"not_impacted": "All versions starting from 3.2.5",
"package_slug": "gem/rexml",
"pubdate": "2021-04-21",
"solution": "Upgrade to version 3.2.5 or above.",
"title": "Improper Restriction of XML External Entity Reference",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-28965"
],
"uuid": "d3422009-4cd3-49e6-bc8a-b0581fed6612"
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
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"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
"version": "2.0"
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},
"lastModifiedDate": "2021-06-02T18:37Z",
"publishedDate": "2021-04-21T07:15Z"
}
}
}
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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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