150 lines
6.1 KiB
JSON
150 lines
6.1 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-2026-54590",
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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": "2026-06-15T19:45:23.538Z",
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"datePublished": "2026-07-08T20:36:45.258Z",
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"dateUpdated": "2026-07-10T15:00:21.849Z"
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},
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"containers": {
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"cna": {
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"title": "AsyncSSH AuthorizedKeysFile username substitution bypass through ~ and environment expansion",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-22",
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"lang": "en",
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"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
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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-639",
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"lang": "en",
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"description": "CWE-639: Authorization Bypass Through User-Controlled Key",
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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/ronf/asyncssh/security/advisories/GHSA-qr67-gv47-xwwh",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/ronf/asyncssh/security/advisories/GHSA-qr67-gv47-xwwh"
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},
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{
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"name": "https://github.com/ronf/asyncssh/commit/3d515ba9ba0cd9990d248bdf62bcf05d51261a88",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/ronf/asyncssh/commit/3d515ba9ba0cd9990d248bdf62bcf05d51261a88"
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},
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{
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"name": "https://github.com/ronf/asyncssh/releases/tag/v2.23.1",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/ronf/asyncssh/releases/tag/v2.23.1"
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}
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],
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"affected": [
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{
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"vendor": "ronf",
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"product": "asyncssh",
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"versions": [
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{
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"version": "< 2.23.1",
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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": "2026-07-08T20:36:45.258Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python asyncio framework. Version 2.23.0 contains an incomplete fix for CVE-2026-45309 in SSHServerConfig._set_tokens that blocks /, , and .. before %u substitution in AuthorizedKeysFile but does not block a leading ~ or ${ENV}, allowing later expansion in _expand_val and Path(filename).expanduser() to escape the intended authorized-keys directory. This issue is fixed in version 2.23.1."
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}
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],
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"source": {
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"advisory": "GHSA-qr67-gv47-xwwh",
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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/ronf/asyncssh/security/advisories/GHSA-qr67-gv47-xwwh",
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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": "2026-07-10T15:00:13.292812Z",
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"id": "CVE-2026-54590",
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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": "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": "2026-07-10T15:00:21.849Z"
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}
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}
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]
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}
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} |