152 行
7.6 KiB
JSON
152 行
7.6 KiB
JSON
{
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"canonical_id": "apache-httpd--CVE-2021-41773",
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"system_id": "apache-httpd",
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"display_name": "Apache HTTP Server",
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"category": "servers",
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"advisory_mode": "server",
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"title": "Apache HTTP Server Path Traversal Vulnerability",
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"summary": "Apache HTTP Server contains a path traversal vulnerability that allows an attacker to perform remote code execution if files outside directories configured by Alias-like directives are not under default \ufffdrequire all denied\ufffd or if CGI scripts are enabled. The original patch issued under this CVE ID is insufficient, please review remediation information under CVE-2021-42013.",
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"published_at": "2021-11-03",
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"updated_at": "2021-11-17",
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"severity": "critical",
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"cvss_score": null,
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"exploit_status": "known_exploited",
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"source_confidence": "official",
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"official_source_url": "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json",
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"secondary_source_urls": [],
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"aliases": [
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"CVE-2021-41773"
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],
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"cve_ids": [
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"CVE-2021-41773"
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],
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"ghsa_ids": [],
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"osv_ids": [],
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"affected_versions": [],
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"fixed_versions": [],
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"package_name": null,
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"render_markdown": false,
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"case_path": null,
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"secure_code_topics": [
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"request-smuggling-boundary",
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"proxy-trust-boundary",
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"path-traversal-guard"
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],
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"status": "triage",
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"triage_reasons": [
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"missing affected/fixed version details"
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],
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"entity_refs": [
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{
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"entity_id": "apache-httpd",
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"entity_type": "system",
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"relation": "root-system",
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"root_system_id": "apache-httpd",
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"official": true
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}
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],
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"affected_components": [
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{
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"name": "Apache HTTP Server",
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"entity_id": "apache-httpd",
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"scope": "core",
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"package_name": null,
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"official": true
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}
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],
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"affected_version_ranges": [],
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"fixed_version_ranges": [],
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"introduced_version": null,
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"patched_version": null,
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"version_evidence_sources": [
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"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json"
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],
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"affected_version_refs": [],
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"fixed_version_refs": [],
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"patched_version_refs": [],
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"version_sync_confidence": "low",
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"advisory_scope": "core",
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"version_confidence": "low",
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"version_gap_reason": "official bulletin or aggregated source did not expose explicit affected/fixed versions",
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"version_resolution_needed": true,
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"workflow": {
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"workflow_id": "apache-httpd--CVE-2021-41773--workflow",
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"vuln_family": "proxy-boundary",
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"entry_surface": "proxy-header-or-trust-boundary",
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"preconditions": [
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"\u4ec5\u5728 lab-local\u3001lab-public \u6216\u660e\u786e\u6388\u6743\u76ee\u6807\u4e2d\u6267\u884c\u3002",
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"\u786e\u8ba4\u76ee\u6807\u547d\u4e2d\u7248\u672c\u65ad\u8a00: \u9700\u8981\u4ece\u516c\u544a\u3001\u9501\u6587\u4ef6\u3001\u7248\u672c\u9875\u6216\u5173\u4e8e\u9875\u9762\u4eba\u5de5\u786e\u8ba4\u7248\u672c\u547d\u4e2d",
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"\u82e5\u5bf9\u8c61\u5c5e\u4e8e `core`\uff0c\u5148\u786e\u8ba4\u6269\u5c55/\u4ed3\u5e93/\u5305\u5df2\u542f\u7528\u5e76\u5904\u4e8e\u53d7\u5f71\u54cd\u7248\u672c\u3002"
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],
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"required_role": "reverse-proxy-or-edge-client",
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"affected_version_assertion": [
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"\u9700\u8981\u4ece\u516c\u544a\u3001\u9501\u6587\u4ef6\u3001\u7248\u672c\u9875\u6216\u5173\u4e8e\u9875\u9762\u4eba\u5de5\u786e\u8ba4\u7248\u672c\u547d\u4e2d"
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],
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"trigger_vector": "\u5bf9 `proxy-boundary` \u5bb6\u65cf\u5165\u53e3\u6295\u9012\u6700\u5c0f\u5316\u3001\u53ef\u5ba1\u8ba1\u3001\u53ef\u56de\u6eda\u7684\u53d7\u63a7\u8f93\u5165\uff0c\u6bd4\u8f83\u4fee\u590d\u524d\u540e\u5dee\u5f02\u3002",
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"request_or_ui_path": [
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"/middleware",
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"/x-forwarded-* trust path"
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],
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"input_shape": "\u63d0\u4ea4\u53d7\u63a7\u4ee3\u7406\u5934\u6216\u6765\u6e90\u5934\uff0c\u9a8c\u8bc1\u4fe1\u4efb\u8fb9\u754c\u548c\u56de\u6e90\u9274\u6743\u3002",
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"expected_unsafe_behavior": "\u4ec5\u51ed\u4ee3\u7406\u5934\u5373\u53ef\u8d8a\u8fc7\u9274\u6743\u6216\u6765\u6e90\u63a7\u5236\u3002",
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"server_evidence_points": [
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"\u5e94\u7528\u65e5\u5fd7\u4e2d\u7684\u547d\u4e2d\u8def\u5f84\u3001\u9274\u6743\u51b3\u7b56\u548c\u5f02\u5e38\u6808",
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"\u53cd\u5411\u4ee3\u7406\u6216\u8fb9\u754c\u5c42\u65e5\u5fd7\u4e2d\u7684\u8bf7\u6c42\u5934\u3001\u6765\u6e90 IP \u4e0e\u8def\u7531\u51b3\u7b56"
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],
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"browser_evidence_points": [
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"\u57fa\u7ebf\u622a\u56fe\u4e0e\u653b\u51fb\u540e\u622a\u56fe\u7684 DOM/\u89c6\u89c9\u5dee\u5f02",
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"console\u3001network \u4e0e response metadata \u4e2d\u7684\u5f02\u5e38\u4fe1\u53f7"
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],
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"db_or_fs_evidence_points": [
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"\u6570\u636e\u5e93\u4e2d\u65b0\u589e/\u8d8a\u6743\u8bfb\u53d6\u7684\u6d4b\u8bd5\u6570\u636e",
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"\u6587\u4ef6\u7cfb\u7edf\u4e2d\u65b0\u589e\u4e0a\u4f20\u6837\u672c\u3001\u7f13\u5b58\u6761\u76ee\u6216\u8d8a\u6743\u8bfb\u53d6\u75d5\u8ff9"
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],
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"detection_signals": [
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"WAF / reverse proxy \u5f02\u5e38\u65e5\u5fd7\u3001\u8bbf\u95ee\u65e5\u5fd7\u548c\u544a\u8b66",
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"\u5e94\u7528\u5ba1\u8ba1\u65e5\u5fd7\u4e2d\u7684\u6743\u9650\u9519\u8bef\u3001\u91cd\u5b9a\u5411\u5f02\u5e38\u3001\u6a21\u677f\u6e32\u67d3\u6216\u4e0a\u4f20\u843d\u76d8\u4e8b\u4ef6",
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"\u4e0a\u6e38\u4ee3\u7406\u4e0e\u5e94\u7528\u5c42\u5bf9 Content-Length / Transfer-Encoding / forwarded headers \u7684\u89e3\u91ca\u5dee\u5f02"
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],
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"mitigation_summary": "\u4f18\u5148\u5347\u7ea7\u5230\u4fee\u590d\u7248\u672c\uff0c\u5e76\u540c\u65f6\u6536\u7d27\u8f93\u5165\u6821\u9a8c\u3001\u670d\u52a1\u7aef\u9274\u6743\u3001\u4ee3\u7406\u4fe1\u4efb\u8fb9\u754c\u3001\u6269\u5c55\u5b89\u88c5\u4fe1\u4efb\u548c\u5ba1\u8ba1\u65e5\u5fd7\u3002",
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"patch_validation_steps": [
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"\u786e\u8ba4\u76ee\u6807\u7248\u672c\u4ece `\u53d7\u5f71\u54cd\u7248\u672c\u533a\u95f4` \u5347\u7ea7\u6216\u56de\u79fb\u5230 `\u4fee\u590d\u7248\u672c`\u3002",
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"\u4fdd\u7559\u540c\u4e00\u7ec4\u53d7\u63a7\u8f93\u5165\uff0c\u5728\u4fee\u590d\u524d\u540e\u5206\u522b\u6267\u884c\u5e76\u6bd4\u5bf9\u54cd\u5e94\u3001\u65e5\u5fd7\u4e0e\u6d4f\u89c8\u5668\u8bc1\u636e\u3002",
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"\u786e\u8ba4\u4fee\u590d\u540e\u4ec5\u4fdd\u7559\u9884\u671f\u4e1a\u52a1\u884c\u4e3a\uff0c\u4e0d\u518d\u89e6\u53d1\u8d8a\u6743\u3001\u56de\u663e\u3001\u5f02\u5e38\u6e32\u67d3\u6216\u9519\u8bef\u8bf7\u6c42\u3002",
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"\u8865\u5145 `proxy-boundary` \u65cf\u81ea\u52a8\u5316\u56de\u5f52\uff0c\u907f\u514d\u540c\u7c7b\u8def\u5f84\u5728\u63d2\u4ef6\u3001\u4e3b\u9898\u6216\u4ee3\u7406\u94fe\u4e2d\u56de\u5f52\u3002"
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],
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"lab_safety_notes": [
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"\u53ea\u4f7f\u7528\u56de\u73af\u5730\u5740\u3001\u54e8\u5175\u76ee\u6807\u3001\u65e0\u5bb3\u6837\u672c\u6216\u53ef\u56de\u6eda\u6d4b\u8bd5\u6570\u636e\u3002",
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"\u7981\u6b62\u9020\u6210\u6301\u4e45\u7834\u574f\u3001\u8d8a\u6743\u4e0b\u8f7d\u771f\u5b9e\u6570\u636e\u6216\u4e0d\u53ef\u56de\u6eda side effect\u3002",
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"\u5982\u9700\u6d4f\u89c8\u5668\u8bc1\u636e\uff0c\u4fdd\u7559 baseline / proof \u4e24\u4efd\u5feb\u7167\u4ee5\u53ca console / network \u8bb0\u5f55\u3002"
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],
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"review_state": "needs-version-gap-review"
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},
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"verification_status": "triage-manual",
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"verification_mode": "synthetic",
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"last_verified_at": null,
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"last_run_id": null,
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"evidence_bundle": null,
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"historical_status": null,
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"latest_status": null,
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"browser_evidence": {
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"required": false,
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"present": false,
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"refs": []
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},
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"repro_profile_id": "proxy-boundary-generic",
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"artifact_mode": "official-image",
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"blocked_reason": null,
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"metadata": {
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"source_names": [
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"CISA KEV Apache HTTPD"
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],
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"source_kinds": [
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"kev-json"
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],
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"candidate_count": 1,
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"entity_ref_count": 1,
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"advisory_scope": "core",
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"version_confidence": "low",
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"workflow_id": "apache-httpd--CVE-2021-41773--workflow"
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}
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}
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