175 lines
7.4 KiB
JSON
175 lines
7.4 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-2026-53583",
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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": "2026-06-09T19:11:53.484Z",
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"datePublished": "2026-08-20T18:39:03.676Z",
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"dateUpdated": "2026-08-20T19:04:42.247Z"
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},
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"containers": {
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"cna": {
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"title": "libgit2: Inverted IP SubjectAltName Comparison in OpenSSL Backend",
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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-297",
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"lang": "en",
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"description": "CWE-297: Improper Validation of Certificate with Host Mismatch",
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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": 6.5,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "LOW",
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"integrityImpact": "LOW",
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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:L/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/libgit2/libgit2/security/advisories/GHSA-h7gc-w2gg-p9xp",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-h7gc-w2gg-p9xp"
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},
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{
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"name": "https://github.com/libgit2/libgit2/commit/647dcb432980b84ede4cb5a008bbd1ccb4ead03d",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/commit/647dcb432980b84ede4cb5a008bbd1ccb4ead03d"
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},
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{
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"name": "https://github.com/libgit2/libgit2/commit/c2aa35409ee0e6515df64da49750f13a0a42c47f",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/commit/c2aa35409ee0e6515df64da49750f13a0a42c47f"
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},
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{
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"name": "https://github.com/libgit2/libgit2/commit/ef086bc3e4eedf62be38a910381aae24d49871ff",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/commit/ef086bc3e4eedf62be38a910381aae24d49871ff"
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},
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{
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"name": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6"
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},
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{
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"name": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5"
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}
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],
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"affected": [
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{
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"vendor": "libgit2",
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"product": "libgit2",
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"versions": [
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{
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"version": "< 1.8.6",
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"status": "affected"
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},
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{
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"version": ">= 1.9.0, < 1.9.5",
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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": "2026-08-20T18:39:03.676Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, verify_server_cert in src/libgit2/streams/openssl.c uses an inverted !!memcmp result in the GEN_IPADD branch when comparing an IP-literal host with a certificate IP SubjectAltName. OpenSSL builds reject matching IP addresses and accept mismatched IP addresses, allowing a network attacker with a CA-trusted certificate containing any IP SubjectAltName to intercept libgit2 connections to IP-literal HTTPS URLs. DNS SubjectAltName validation and non-OpenSSL TLS backends are not affected. This issue is fixed in versions 1.8.6 and 1.9.5."
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}
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],
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"source": {
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"advisory": "GHSA-h7gc-w2gg-p9xp",
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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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"references": [
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{
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"url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-h7gc-w2gg-p9xp",
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"tags": [
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"exploit"
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-20T19:03:44.491440Z",
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"id": "CVE-2026-53583",
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"options": [
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{
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"Exploitation": "poc"
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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": "2026-08-20T19:04:42.247Z"
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}
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}
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]
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}
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} |