openeuler-sa-2026-3871
CRITICAL CVSS 9.8 csaf_openeuler
Description
perl-Net-DNS security update
Timeline
- Published
- 2026-09-16 17:56 UTC
- Last Modified
- 2026-09-16
CVSS Details
CVSS details not available.
Affected Products
No product information available.
References
No references available.
Linked Vulnerabilities
No linked vulnerabilities found.
{
"document": {
"aggregate_severity": {
"namespace": "https://nvd.nist.gov/vuln-metrics/cvss",
"text": "Critical"
},
"category": "csaf_vex",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https:/www.first.org/tlp/"
}
},
"lang": "en",
"notes": [
{
"category": "general",
"text": "perl-Net-DNS security update",
"title": "Synopsis"
},
{
"category": "general",
"text": "An update for perl-Net-DNS is now available for openEuler-24.03-LTS-SP4",
"title": "Summary"
},
{
"category": "general",
"text": "Net :: DNS is a collection of Perl's Domain Name System resolvers. It allows programmers to perform DNS queries for gethostbyname and gethostbyaddr functions.\n\nSecurity Fix(es):\n\nNet::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR.\n\nNet::DNS::RR::OPT::EXTENDED_ERROR::_decompose parses the EXTRA-TEXT field of an EDNS EXTENDED-ERROR option (RFC 8914) by tokenising the raw bytes and passing the result to Perl's eval. There is some escaping done for $ and @, but not for backticks. This can be exploited for command execution if $pkt->edns->option('EXTENDED-ERROR') is called in array context, for example with a payload of {0:`\"<command>\"`} in EXTRA-TEXT.(CVE-2026-64193)",
"title": "Description"
},
{
"category": "general",
"text": "An update for perl-Net-DNS is now available for openEuler-24.03-LTS-SP4.\n\nopenEuler Security has rated this update as having a security impact of critical. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.",
"title": "Topic"
},
{
"category": "general",
"text": "Critical",
"title": "Severity"
},
{
"category": "general",
"text": "perl-Net-DNS",
"title": "Affected Component"
}
],
"publisher": {
"category": "vendor",
"contact_details": "openeuler-security@openeuler.org",
"issuing_authority": "openEuler security committee",
"name": "openEuler",
"namespace": "https://www.openeuler.org"
},
"references": [
{
"category": "self",
"summary": "openEuler-SA-2026-3871",
"url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3871"
},
{
"category": "self",
"summary": "CVE-2026-64193",
"url": "https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-64193&packageName=perl-Net-DNS"
},
{
"category": "external",
"summary": "nvd cve",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64193"
},
{
"category": "self",
"summary": "openEuler-SA-2026-3871 vex file",
"url": "https://repo.openeuler.org/security/data/csaf/advisories/2026/csaf-openeuler-sa-2026-3871.json"
}
],
"title": "An update for perl-Net-DNS is now available for openEuler-24.03-LTS-SP4",
"tracking": {
"current_release_date": "2026-09-16T17:56:00+08:00",
"generator": {
"date": "2026-09-16T17:56:00+08:00",
"engine": {
"name": "openEuler CSAF Tool V1.0"
}
},
"id": "openEuler-SA-2026-3871",
"initial_release_date": "2026-09-16T17:56:00+08:00",
"revision_history": [
{
"date": "2026-09-16T17:56:00+08:00",
"number": "1.0.0",
"summary": "Initial"
}
],
"status": "final",
"version": "1.0.0"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
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"name": "openEuler-24.03-LTS-SP4",
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"name": "openEuler"
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{
"branches": [
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"name": "perl-Net-DNS-1.40-2.oe2403sp4.src.rpm",
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"product": {
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"relationships": [
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"product_id": "openEuler-24.03-LTS-SP4:perl-Net-DNS-1.40-2.oe2403sp4.src"
},
"product_reference": "perl-Net-DNS-1.40-2.oe2403sp4.src.rpm",
"relates_to_product_reference": "openEuler-24.03-LTS-SP4"
},
{
"category": "default_component_of",
"full_product_name": {
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{
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},
"vulnerabilities": [
{
"cve": "CVE-2026-64193",
"notes": [
{
"category": "description",
"text": "Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR.\n\nNet::DNS::RR::OPT::EXTENDED_ERROR::_decompose parses the EXTRA-TEXT field of an EDNS EXTENDED-ERROR option (RFC 8914) by tokenising the raw bytes and passing the result to Perl's eval. There is some escaping done for $ and @, but not for backticks. This can be exploited for command execution if $pkt->edns->option('EXTENDED-ERROR') is called in array context, for example with a payload of {0:`\"<command>\"`} in EXTRA-TEXT.",
"title": "Vulnerability Description"
}
],
"product_status": {
"fixed": [
"openEuler-24.03-LTS-SP4:perl-Net-DNS-1.40-2.oe2403sp4.src",
"openEuler-24.03-LTS-SP4:perl-Net-DNS-1.40-2.oe2403sp4.noarch",
"openEuler-24.03-LTS-SP4:perl-Net-DNS-help-1.40-2.oe2403sp4.noarch"
]
},
"remediations": [
{
"category": "vendor_fix",
"details": "perl-Net-DNS security update",
"product_ids": [
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"openEuler-24.03-LTS-SP4:perl-Net-DNS-1.40-2.oe2403sp4.noarch",
"openEuler-24.03-LTS-SP4:perl-Net-DNS-help-1.40-2.oe2403sp4.noarch"
],
"url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3871"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
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]
}
],
"threats": [
{
"category": "impact",
"details": "Critical"
}
],
"title": "CVE-2026-64193"
}
]
}