174 lines
7.5 KiB
JSON
174 lines
7.5 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-86219",
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"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
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"state": "PUBLISHED",
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"assignerShortName": "CPANSec",
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"dateReserved": "2026-09-06T00:13:35.358Z",
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"datePublished": "2026-09-06T17:46:30.340Z",
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"dateUpdated": "2026-09-08T18:54:55.841Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"collectionURL": "https://cpan.org/modules",
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"defaultStatus": "unaffected",
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"modules": [
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"Authen::SASL::Perl::DIGEST_MD5"
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],
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"packageName": "Authen-SASL",
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"packageURL": "pkg:cpan/Authen-SASL",
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"programFiles": [
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"lib/Authen/SASL/Perl/DIGEST_MD5.pm"
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],
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"programRoutines": [
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{
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"name": "Authen::SASL::Perl::DIGEST_MD5::server_step"
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},
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{
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"name": "Authen::SASL::Perl::DIGEST_MD5::server_start"
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}
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],
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"repo": "https://github.com/perl-authen-sasl/perl-authen-sasl",
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"versions": [
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{
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"lessThan": "2.2100",
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"status": "affected",
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"version": "0",
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"versionType": "custom"
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}
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]
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "Authen::SASL::Perl::DIGEST_MD5 versions before 2.2100 for Perl accept replayed authentication responses via unverified nonce in server_step.\n\nserver_start generates a fresh nonce and sends it in the challenge, and nothing later compares that value against the nonce the client returns. server_step derives the expected digest from the client's own parameters, so a response verifies whenever its digest matches the nonce it carries. The count table it also checks is keyed on the client-supplied nonce and starts empty in each new server object, so a captured first response, carrying `nc=00000001`, passes that too. RFC 2831 defines the nonce in the response as the value the server sent in the preceding challenge.\n\nAn attacker who observes one successful `qop=auth` exchange can replay the captured response against a later session for the same service, host, realm and user, and authenticate as that user without knowing the password."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-115",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-115 Authentication Bypass"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-294",
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"description": "CWE-294 Authentication Bypass by Capture-replay",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
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"shortName": "CPANSec",
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"dateUpdated": "2026-09-06T17:46:30.340Z"
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},
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"references": [
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{
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"url": "https://metacpan.org/release/EHUELS/Authen-SASL-2.2000/source/lib/Authen/SASL/Perl/DIGEST_MD5.pm#L203-222"
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},
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{
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"url": "https://metacpan.org/release/EHUELS/Authen-SASL-2.2000/source/lib/Authen/SASL/Perl/DIGEST_MD5.pm#L410-414"
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},
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{
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"url": "https://datatracker.ietf.org/doc/html/rfc2831#section-2.1.2"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/perl-authen-sasl/perl-authen-sasl/commit/94337367030612842924f697cead29964a96448d.patch"
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},
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{
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"tags": [
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"release-notes"
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],
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"url": "https://metacpan.org/release/EHUELS/Authen-SASL-2.2100/changes"
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},
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{
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"tags": [
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"related"
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],
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"url": "https://www.cve.org/CVERecord?id=CVE-2025-40918"
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "Upgrade to Authen-SASL 2.2100 or later."
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}
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],
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"source": {
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"discovery": "UNKNOWN"
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},
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"title": "Authen::SASL::Perl::DIGEST_MD5 versions before 2.2100 for Perl accept replayed authentication responses via unverified nonce in server_step",
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"x_generator": {
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"engine": "cpansec-cna-tool 0.1"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 9.8,
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"attackVector": "NETWORK",
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"baseSeverity": "CRITICAL",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"confidentialityImpact": "HIGH"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-08T18:54:38.530817Z",
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"id": "CVE-2026-86219",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-08T18:54:55.841Z"
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}
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}
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]
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}
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} |