193 lines
8.6 KiB
JSON
193 lines
8.6 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-18089",
|
|
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "CPANSec",
|
|
"dateReserved": "2026-07-28T16:26:10.967Z",
|
|
"datePublished": "2026-08-03T12:42:08.879Z",
|
|
"dateUpdated": "2026-08-03T19:56:33.033Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"affected": [
|
|
{
|
|
"collectionURL": "https://cpan.org/modules",
|
|
"defaultStatus": "unaffected",
|
|
"packageName": "Net-SAML2",
|
|
"product": "Net::SAML2",
|
|
"programFiles": [
|
|
"lib/Net/SAML2/Role/VerifyXML.pm",
|
|
"lib/Net/SAML2/Binding/POST.pm",
|
|
"lib/Net/SAML2/Protocol/Assertion.pm"
|
|
],
|
|
"programRoutines": [
|
|
{
|
|
"name": "Net::SAML2::Role::VerifyXML::verify_xml"
|
|
},
|
|
{
|
|
"name": "Net::SAML2::Binding::POST::handle_response"
|
|
},
|
|
{
|
|
"name": "Net::SAML2::Protocol::Assertion::_verify_encrypted_assertion"
|
|
}
|
|
],
|
|
"repo": "https://github.com/perl-net-saml2/perl-Net-SAML2",
|
|
"vendor": "TIMLEGGE",
|
|
"versions": [
|
|
{
|
|
"lessThan": "0.86",
|
|
"status": "affected",
|
|
"version": "0",
|
|
"versionType": "custom"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "Net::SAML2 versions before 0.86 for Perl allow SAML authentication bypass by verifying responses against the response-embedded certificate in verify_xml when no trust anchor is configured.\n\nverify_xml in Net::SAML2::Role::VerifyXML runs \"return if !$anchors && !$cacert;\" as soon as the XML::Sig check succeeds, and that check uses the X.509 certificate taken from the response's own dsig:KeyInfo/dsig:X509Certificate element, so an unanchored response is checked only against the key it carries. Binding::POST declares cacert as an optional Maybe[Str] with no default, so a POST binding built without one takes that path, and _verify_encrypted_assertion returns early the same way with \"return $xml unless $cacert;\".\n\nAny caller that constructs Binding::POST or calls Assertion->new_from_xml without a cacert, cert_text, or anchors argument accepts a response signed by an attacker generated key whose self-signed certificate is embedded in that response, authenticating an arbitrary assertion."
|
|
}
|
|
],
|
|
"impacts": [
|
|
{
|
|
"capecId": "CAPEC-115",
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "CAPEC-115 Authentication Bypass"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-347",
|
|
"description": "CWE-347 Improper Verification of Cryptographic Signature",
|
|
"lang": "en",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-295",
|
|
"description": "CWE-295 Improper Certificate Validation",
|
|
"lang": "en",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
|
|
"shortName": "CPANSec",
|
|
"dateUpdated": "2026-08-03T12:42:08.879Z"
|
|
},
|
|
"references": [
|
|
{
|
|
"tags": [
|
|
"release-notes"
|
|
],
|
|
"url": "https://metacpan.org/release/TIMLEGGE/Net-SAML2-0.88/source/Changes"
|
|
},
|
|
{
|
|
"url": "https://metacpan.org/release/TIMLEGGE/Net-SAML2-0.85/source/lib/Net/SAML2/Role/VerifyXML.pm#L32"
|
|
},
|
|
{
|
|
"url": "https://metacpan.org/release/TIMLEGGE/Net-SAML2-0.85/source/lib/Net/SAML2/Binding/POST.pm#L21"
|
|
},
|
|
{
|
|
"url": "https://metacpan.org/release/TIMLEGGE/Net-SAML2-0.85/source/lib/Net/SAML2/Protocol/Assertion.pm#L84"
|
|
}
|
|
],
|
|
"solutions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "Upgrade to Net::SAML2 0.86 or later, which requires a cacert or cert_text trust anchor before a response or assertion signature is verified."
|
|
}
|
|
],
|
|
"source": {
|
|
"discovery": "UNKNOWN"
|
|
},
|
|
"timeline": [
|
|
{
|
|
"lang": "en",
|
|
"time": "2026-07-31T00:00:00.000Z",
|
|
"value": "Version 0.86 released with fix."
|
|
},
|
|
{
|
|
"lang": "en",
|
|
"time": "2026-07-31T00:00:00.000Z",
|
|
"value": "Version 0.88 released, re-issuing 0.86 with a corrected version number."
|
|
}
|
|
],
|
|
"title": "Net::SAML2 versions before 0.86 for Perl allow SAML authentication bypass by verifying responses against the response-embedded certificate in verify_xml when no trust anchor is configured",
|
|
"workarounds": [
|
|
{
|
|
"lang": "en",
|
|
"value": "For deployments that cannot upgrade, construct Net::SAML2::Binding::POST, and call Net::SAML2::Protocol::Assertion->new_from_xml, with a cacert, cert_text, or anchors argument identifying the IdP signing certificate."
|
|
}
|
|
],
|
|
"x_generator": {
|
|
"engine": "cpansec-cna-tool 0.1"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"scope": "UNCHANGED",
|
|
"version": "3.1",
|
|
"baseScore": 7.5,
|
|
"attackVector": "NETWORK",
|
|
"baseSeverity": "HIGH",
|
|
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
|
|
"integrityImpact": "HIGH",
|
|
"userInteraction": "NONE",
|
|
"attackComplexity": "LOW",
|
|
"availabilityImpact": "NONE",
|
|
"privilegesRequired": "NONE",
|
|
"confidentialityImpact": "NONE"
|
|
}
|
|
},
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-08-03T19:56:09.872860Z",
|
|
"id": "CVE-2026-18089",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "yes"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-08-03T19:56:33.033Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |