158 lines
7.3 KiB
JSON
158 lines
7.3 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-18092",
|
|
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "CPANSec",
|
|
"dateReserved": "2026-07-28T16:46:56.926Z",
|
|
"datePublished": "2026-08-03T13:24:52.137Z",
|
|
"dateUpdated": "2026-08-03T20:01:20.742Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"affected": [
|
|
{
|
|
"collectionURL": "https://cpan.org/modules",
|
|
"defaultStatus": "unaffected",
|
|
"packageName": "Net-SAML2",
|
|
"product": "Net::SAML2",
|
|
"programFiles": [
|
|
"lib/Net/SAML2/Protocol/Assertion.pm",
|
|
"lib/Net/SAML2/Binding/POST.pm"
|
|
],
|
|
"programRoutines": [
|
|
{
|
|
"name": "Net::SAML2::Protocol::Assertion::new_from_xml"
|
|
},
|
|
{
|
|
"name": "Net::SAML2::Binding::POST::handle_response"
|
|
}
|
|
],
|
|
"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 via XML signature wrapping because new_from_xml reads assertion identity with document-wide XPath instead of the signed subtree.\n\nnew_from_xml reads the NameID, attribute values, SessionIndex, audience and other identity fields with document-wide XPath, such as //saml:Assertion/saml:AttributeStatement/saml:Attribute and //saml:Subject/saml:NameID, which select the first matching element in document order rather than the element covered by the verified signature. handle_response confirms that a signature is present and, when a cacert is configured, that it chains to the CA, but XML::Sig verifies only the element named by the signature's Reference URI, so unsigned sibling assertions in the same document are not covered. An attacker who holds any one IdP-signed assertion can add an unsigned attacker-authored assertion earlier in document order; the signature still verifies and the document-order XPath returns the attacker's NameID and attributes.\n\nAny caller that passes an untrusted Response to new_from_xml can accept identity fields from an assertion the IdP never signed, even when a cacert trust anchor is configured, so a party holding one valid IdP-signed assertion can authenticate as an arbitrary user."
|
|
}
|
|
],
|
|
"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"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
|
|
"shortName": "CPANSec",
|
|
"dateUpdated": "2026-08-03T13:24:52.137Z"
|
|
},
|
|
"references": [
|
|
{
|
|
"tags": [
|
|
"release-notes"
|
|
],
|
|
"url": "https://metacpan.org/release/TIMLEGGE/Net-SAML2-0.86/changes"
|
|
},
|
|
{
|
|
"tags": [
|
|
"patch"
|
|
],
|
|
"url": "https://github.com/perl-net-saml2/perl-Net-SAML2/commit/201fead7f42b83f40c84bf4a311a25b09acd18f9.patch"
|
|
}
|
|
],
|
|
"solutions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "Upgrade to Net::SAML2 0.86 or later, which anchors identity extraction at the assertion subtree covered by a signature that validates against the configured trust anchor."
|
|
}
|
|
],
|
|
"source": {
|
|
"discovery": "UNKNOWN"
|
|
},
|
|
"title": "Net::SAML2 versions before 0.86 for Perl allow SAML authentication bypass via XML signature wrapping because new_from_xml reads assertion identity with document-wide XPath instead of the signed subtree",
|
|
"x_generator": {
|
|
"engine": "cpansec-cna-tool 0.1"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"scope": "UNCHANGED",
|
|
"version": "3.1",
|
|
"baseScore": 8.1,
|
|
"attackVector": "NETWORK",
|
|
"baseSeverity": "HIGH",
|
|
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
|
|
"integrityImpact": "HIGH",
|
|
"userInteraction": "REQUIRED",
|
|
"attackComplexity": "LOW",
|
|
"availabilityImpact": "HIGH",
|
|
"privilegesRequired": "NONE",
|
|
"confidentialityImpact": "NONE"
|
|
}
|
|
},
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-08-03T20:00:23.033425Z",
|
|
"id": "CVE-2026-18092",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"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": "2026-08-03T20:01:20.742Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |