132 lines
5.6 KiB
JSON
132 lines
5.6 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-2026-34610",
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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": "2026-03-30T17:15:52.500Z",
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"datePublished": "2026-04-02T17:54:53.250Z",
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"dateUpdated": "2026-04-03T17:25:10.195Z"
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},
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"containers": {
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"cna": {
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"title": "leancrypto: Integer truncation in X.509 name parser enables certificate identity impersonation",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-681",
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"lang": "en",
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"description": "CWE-681: Incorrect Conversion between Numeric Types",
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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": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 5.9,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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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:H/PR:N/UI:N/S:U/C:N/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/smuellerDD/leancrypto/security/advisories/GHSA-636g-jxv4-v4gr",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/smuellerDD/leancrypto/security/advisories/GHSA-636g-jxv4-v4gr"
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},
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{
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"name": "https://github.com/smuellerDD/leancrypto/commit/5cdcbe12bd6c3d6e87e969972a580b44a74c3a6a",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/smuellerDD/leancrypto/commit/5cdcbe12bd6c3d6e87e969972a580b44a74c3a6a"
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},
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{
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"name": "https://github.com/smuellerDD/leancrypto/releases/tag/v1.7.1",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/smuellerDD/leancrypto/releases/tag/v1.7.1"
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}
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],
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"affected": [
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{
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"vendor": "smuellerDD",
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"product": "leancrypto",
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"versions": [
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{
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"version": "< 1.7.1",
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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": "2026-04-02T17:54:53.250Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "The leancrypto library is a cryptographic library that exclusively contains only PQC-resistant cryptographic algorithms. Prior to version 1.7.1, lc_x509_extract_name_segment() casts size_t vlen to uint8_t when storing the Common Name (CN) length. An attacker who crafts a certificate with CN = victim's CN + 256 bytes padding gets cn_size = (uint8_t)(256 + N) = N, where N is the victim's CN length. The first N bytes of the attacker's CN are the victim's identity. After parsing, the attacker's certificate has an identical CN to the victim's — enabling identity impersonation in PKCS#7 verification, certificate chain matching, and code signing. This issue has been patched in version 1.7.1."
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}
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],
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"source": {
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"advisory": "GHSA-636g-jxv4-v4gr",
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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": "2026-04-03T17:03:26.975851Z",
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"id": "CVE-2026-34610",
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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": "no"
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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": "2026-04-03T17:25:10.195Z"
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}
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}
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]
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}
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} |