182 lines
8.3 KiB
JSON
182 lines
8.3 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-2026-62847",
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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": "2026-07-14T21:10:50.031Z",
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"datePublished": "2026-10-30T20:23:50.882Z",
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"dateUpdated": "2026-10-30T22:13:12.107Z"
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},
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"containers": {
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"cna": {
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"title": "Metalama: Local code execution via DLL planting in world-writable temporary directories (Linux/macOS)",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-377",
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"lang": "en",
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"description": "CWE-377: Insecure Temporary File",
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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-427",
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"lang": "en",
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"description": "CWE-427: Uncontrolled Search Path Element",
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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": "LOCAL",
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"availabilityImpact": "HIGH",
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"baseScore": 8.2,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"scope": "CHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
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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/metalama/Metalama/security/advisories/GHSA-m6wq-39m7-9xpp",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/metalama/Metalama/security/advisories/GHSA-m6wq-39m7-9xpp"
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},
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{
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"name": "https://github.com/metalama/Metalama/pull/1650",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/metalama/Metalama/pull/1650"
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},
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{
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"name": "https://github.com/metalama/Metalama/commit/09911349a916e82194b1cfaa6d0a38acad928fc9",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/metalama/Metalama/commit/09911349a916e82194b1cfaa6d0a38acad928fc9"
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},
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{
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"name": "https://github.com/metalama/Metalama/commit/92c4feecfce86d18fcb007ab6d3a1b4383326a2e",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/metalama/Metalama/commit/92c4feecfce86d18fcb007ab6d3a1b4383326a2e"
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},
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{
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"name": "https://github.com/metalama/Metalama/releases/tag/release/2025.1.18",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/metalama/Metalama/releases/tag/release/2025.1.18"
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},
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{
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"name": "https://github.com/metalama/Metalama/releases/tag/release/2026.0.25",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/metalama/Metalama/releases/tag/release/2026.0.25"
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},
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{
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"name": "https://github.com/metalama/Metalama/releases/tag/release/2026.1.19",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/metalama/Metalama/releases/tag/release/2026.1.19"
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}
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],
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"affected": [
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{
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"vendor": "metalama",
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"product": "Metalama",
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"versions": [
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{
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"version": "< 2025.1.18",
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"status": "affected"
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},
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{
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"version": ">= 2025.2.0-preview, <= 2025.2.5-rc",
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"status": "affected"
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},
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{
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"version": ">= 2026.0.0-preview, < 2026.0.25",
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"status": "affected"
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},
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{
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"version": ">= 2026.1.0-preview, < 2026.1.19",
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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": "2026-10-30T20:23:50.882Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Metalama is a Roslyn-based open-source patterns and architecture toolkit for C#. Prior to 2025.1.18, 2026.0.25 and 2026.1.19, Metalama.Framework and Metalama.Tool load and execute compile-time assemblies, auxiliary executable tools and embedded helper assemblies from predictable temporary directories. On `Linux` and `macOS`, the default `Path.GetTempPath()` location is world-writable, and existing artifacts are trusted based on sentinel or `.completed` marker files rather than integrity verification. A local unprivileged user on a shared machine or CI/build agent can pre-create the deterministic directory structure and plant a malicious DLL with the matching sentinel. When a higher-privileged developer or build account subsequently builds, Metalama skips regeneration and executes the planted artifact in the compiler, IDE or MSBuild process as the building user. This permits cross-user privilege escalation, reading source and secrets, supply-chain tampering with build output, or disrupting builds. Default Windows per-user temporary directories are protected by ACLs and are not affected. Deployer-selected insecure cache locations are outside the vulnerability's scope. This issue is fixed in versions 2025.1.18, 2026.0.25 and 2026.1.19."
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}
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],
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"source": {
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"advisory": "GHSA-m6wq-39m7-9xpp",
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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": "2026-10-30T21:21:14.933972Z",
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"id": "CVE-2026-62847",
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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": "total"
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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": "2026-10-30T22:13:12.107Z"
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}
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}
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]
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}
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} |