GHSA-242X-7CM6-4W8J
Vulnerability from github – Published: 2022-05-24 16:59 – Updated: 2026-06-09 10:22
VLAI
Summary
Nokogiri affected by libxslt Use of Uninitialized Resource/Use After Free vulnerability
Details
In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed.
Nokogiri prior to version 1.10.5 contains a vulnerable version of libxslt. Nokogiri version 1.10.5 upgrades the dependency to libxslt 1.1.34, which contains a patch for this issue.
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "nokogiri"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.10.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2019-18197"
],
"database_specific": {
"cwe_ids": [
"CWE-416",
"CWE-908"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-07T21:30:20Z",
"nvd_published_at": "2019-10-18T21:15:00Z",
"severity": "HIGH"
},
"details": "In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn\u0027t reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed.\n\nNokogiri prior to version 1.10.5 contains a vulnerable version of libxslt. Nokogiri version 1.10.5 upgrades the dependency to libxslt 1.1.34, which contains a patch for this issue.",
"id": "GHSA-242x-7cm6-4w8j",
"modified": "2026-06-09T10:22:03Z",
"published": "2022-05-24T16:59:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-18197"
},
{
"type": "WEB",
"url": "https://github.com/sparklemotion/nokogiri/issues/1943"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:0514"
},
{
"type": "WEB",
"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15746"
},
{
"type": "WEB",
"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15768"
},
{
"type": "WEB",
"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15914"
},
{
"type": "WEB",
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2019-18197.yml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sparklemotion/nokogiri"
},
{
"type": "WEB",
"url": "https://github.com/sparklemotion/nokogiri/blob/01ab95f3e37429ed8d3b380a8d2f73902eb325d9/CHANGELOG.md?plain=1#L934"
},
{
"type": "WEB",
"url": "https://gitlab.gnome.org/GNOME/libxslt/commit/2232473733b7313d67de8836ea3b29eec6e8e285"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00037.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20191031-0004"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20200416-0004"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4164-1"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2020.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00010.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00015.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00025.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00062.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2019/11/17/2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Nokogiri affected by libxslt Use of Uninitialized Resource/Use After Free vulnerability"
}
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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
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- 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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