142 lines
6.4 KiB
JSON
142 lines
6.4 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-2026-64855",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-07-20T18:31:39.291Z",
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"datePublished": "2026-11-11T15:48:16.347Z",
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"dateUpdated": "2026-11-12T19:35:51.090Z"
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},
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"containers": {
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"cna": {
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"title": "soapbar: verify_envelope_bsp accepts an unauthenticated embedded certificate (signature forgery / authentication bypass)",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-295",
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"lang": "en",
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"description": "CWE-295: Improper Certificate Validation",
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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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"descriptions": [
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{
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"cweId": "CWE-347",
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"lang": "en",
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"description": "CWE-347: Improper Verification of Cryptographic Signature",
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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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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 8.2,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "LOW",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/hitoshyamamoto/soapbar/security/advisories/GHSA-859w-52fx-hcm6",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/hitoshyamamoto/soapbar/security/advisories/GHSA-859w-52fx-hcm6"
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},
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{
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"name": "https://github.com/hitoshyamamoto/soapbar/pull/71",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/hitoshyamamoto/soapbar/pull/71"
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},
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{
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"name": "https://github.com/hitoshyamamoto/soapbar/releases/tag/v0.13.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/hitoshyamamoto/soapbar/releases/tag/v0.13.0"
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}
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],
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"affected": [
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{
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"vendor": "hitoshyamamoto",
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"product": "soapbar",
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"versions": [
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{
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"version": "< 0.13.0",
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"status": "affected"
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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": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-11-11T15:48:16.347Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "soapbar is a SOAP library for Python — client, server, and WSDL handling. Prior to version 0.13.0, verify_envelope_bsp() derived its trust anchor from the message it was verifying. It read the X.509 certificate out of the caller-untrusted wsse:BinarySecurityToken, validated only that certificate's not-before / not-after dates, and then verified the signature against that same certificate. There was no CA-chain validation, no issuer/subject allowlist, and no pinning. A successful verify_envelope_bsp() therefore proved only that the envelope was signed by whoever supplied the embedded certificate — never that it was signed by a trusted party. An attacker who mints their own certificate, signs a forged envelope, and embeds that certificate in the token passes verification. Any consumer that treats a successful BSP verification as authentication can be impersonated (signature forgery / authentication bypass). verify_envelope() (which pins a caller-supplied x509_cert) was not affected — the flaw was specific to the BSP variant whose trust anchor came from the message. This issue has been patched in version 0.13.0."
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}
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],
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"source": {
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"advisory": "GHSA-859w-52fx-hcm6",
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"discovery": "UNKNOWN"
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-11-12T19:35:40.490316Z",
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"id": "CVE-2026-64855",
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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": "partial"
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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": "2026-11-12T19:35:51.090Z"
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}
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}
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]
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}
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} |