RHBA-2019:3621
Vulnerability from csaf_redhat - Published: 2019-11-05 21:21 - Updated: 2026-01-13 22:39Summary
Red Hat Bug Fix Advisory: libidn2 bug fix and enhancement update
Severity
Moderate
Notes
Topic: An update for libidn2 is now available for Red Hat Enterprise Linux 8.
Details: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.1 Release Notes linked from the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.
5.6 (Medium)
Vendor Fix
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHBA-2019:3621
References
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"name": "Heap-based Buffer Overflow"
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"discovery_date": "2019-10-23T00:00:00+00:00",
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"text": "1764780"
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{
"category": "description",
"text": "idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "libidn2: heap-based buffer overflow in idn2_to_ascii_4i in lib/lookup.c",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2019-18224"
},
{
"category": "external",
"summary": "RHBZ#1764780",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1764780"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2019-18224",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-18224"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-18224",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-18224"
}
],
"release_date": "2019-01-07T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2019-11-05T21:21:43+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"restart_required": {
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},
"url": "https://access.redhat.com/errata/RHBA-2019:3621"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
"version": "3.0"
},
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"CRB-8.1.0:libidn2-debuginfo-0:2.2.0-1.el8.x86_64",
"CRB-8.1.0:libidn2-debugsource-0:2.2.0-1.el8.aarch64",
"CRB-8.1.0:libidn2-debugsource-0:2.2.0-1.el8.i686",
"CRB-8.1.0:libidn2-debugsource-0:2.2.0-1.el8.ppc64le",
"CRB-8.1.0:libidn2-debugsource-0:2.2.0-1.el8.s390x",
"CRB-8.1.0:libidn2-debugsource-0:2.2.0-1.el8.x86_64",
"CRB-8.1.0:libidn2-devel-0:2.2.0-1.el8.aarch64",
"CRB-8.1.0:libidn2-devel-0:2.2.0-1.el8.i686",
"CRB-8.1.0:libidn2-devel-0:2.2.0-1.el8.ppc64le",
"CRB-8.1.0:libidn2-devel-0:2.2.0-1.el8.s390x",
"CRB-8.1.0:libidn2-devel-0:2.2.0-1.el8.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "libidn2: heap-based buffer overflow in idn2_to_ascii_4i in lib/lookup.c"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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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