150 lines
6.6 KiB
JSON
150 lines
6.6 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-2026-85731",
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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": "2026-09-04T14:45:10.649Z",
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"datePublished": "2026-09-16T16:24:48.905Z",
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"dateUpdated": "2026-09-16T17:25:07.159Z"
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},
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"containers": {
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"cna": {
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"title": "oras-go: Arbitrary file write outside file.Store root via symlink-chain bypass in tar extraction (pushDir)",
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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-59",
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"lang": "en",
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"description": "CWE-59: Improper Link Resolution Before File Access ('Link Following')",
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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": "HIGH",
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"baseScore": 8.8,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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/oras-project/oras-go/security/advisories/GHSA-m37j-52j7-pjw7",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/oras-project/oras-go/security/advisories/GHSA-m37j-52j7-pjw7"
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},
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{
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"name": "https://github.com/oras-project/oras-go/commit/adab2f25ea95ef4e6e41f50db9266a6701399422",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/oras-project/oras-go/commit/adab2f25ea95ef4e6e41f50db9266a6701399422"
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},
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{
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"name": "https://github.com/oras-project/oras-go/releases/tag/v2.6.2",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/oras-project/oras-go/releases/tag/v2.6.2"
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}
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],
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"affected": [
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{
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"vendor": "oras-project",
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"product": "oras-go",
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"versions": [
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{
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"version": "< 2.6.2",
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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": "2026-09-16T16:24:48.905Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "oras-go is a Go library for managing OCI artifacts. Prior to 2.6.2, content/file.Store extraction of OCI layers marked with io.deis.oras.content.unpack=true can write outside the store working directory. The pushDir path through extractTarDirectory and ensureLinkPath validates symlink targets lexically, resolveRelToBase skips its parent-symlink walk for root-level entries, and writeFile follows a terminal symlink when opening a regular file. A malicious archive can therefore create a symlink chain whose lexical target remains inside the extraction root but whose resolved target is an attacker-selected absolute path, then overwrite that target with a same-named regular-file entry even when AllowPathTraversalOnWrite is false. Pulling an attacker-controlled artifact can create or overwrite any file writable by the process and may lead to code execution. This issue is fixed in version 2.6.2."
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}
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],
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"source": {
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"advisory": "GHSA-m37j-52j7-pjw7",
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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/oras-project/oras-go/security/advisories/GHSA-m37j-52j7-pjw7",
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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": "2026-09-16T17:24:00.719255Z",
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"id": "CVE-2026-85731",
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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": "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": "2026-09-16T17:25:07.159Z"
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}
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}
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]
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}
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} |