138 lines
6.0 KiB
JSON
138 lines
6.0 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-2026-32946",
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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": "2026-03-17T00:05:53.284Z",
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"datePublished": "2026-03-20T03:58:40.557Z",
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"dateUpdated": "2026-03-20T15:47:42.018Z"
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},
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"containers": {
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"cna": {
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"title": "Egress Policy Bypass via DNS over TCP in Harden-Runner (Community Tier)",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-693",
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"lang": "en",
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"description": "CWE-693: Protection Mechanism Failure",
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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-863",
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"lang": "en",
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"description": "CWE-863: Incorrect Authorization",
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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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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"privilegesRequired": "HIGH",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "HIGH",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 4.6,
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N",
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"version": "4.0"
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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/step-security/harden-runner/security/advisories/GHSA-g699-3x6g-wm3g",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/step-security/harden-runner/security/advisories/GHSA-g699-3x6g-wm3g"
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},
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{
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"name": "https://github.com/step-security/harden-runner/releases/tag/v2.16.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/step-security/harden-runner/releases/tag/v2.16.0"
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}
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],
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"affected": [
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{
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"vendor": "step-security",
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"product": "harden-runner",
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"versions": [
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{
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"version": "< 2.16.0",
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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": "2026-03-20T03:58:40.557Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Harden-Runner is a CI/CD security agent that works like an EDR for GitHub Actions runners. In versions 2.15.1 and below, the Harden-Runner that allows bypass of the egress-policy: block network restriction using DNS queries over TCP. Egress policies are enforced on GitHub runners by filtering outbound connections at the network layer. When egress-policy: block is enabled with a restrictive allowed-endpoints list (e.g., only github.com:443), all non-compliant traffic should be denied. However, DNS queries over TCP, commonly used for large responses or fallback from UDP, are not adequately restricted. Tools like dig can explicitly initiate TCP-based DNS queries (+tcp flag) without being blocked. This vulnerability requires the attacker to already have code execution capabilities within the GitHub Actions workflow. The issue has been fixed in version 2.16.0."
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}
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],
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"source": {
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"advisory": "GHSA-g699-3x6g-wm3g",
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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": "2026-03-20T15:47:30.696684Z",
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"id": "CVE-2026-32946",
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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": "2026-03-20T15:47:42.018Z"
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}
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}
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]
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}
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} |