208 lines
9.2 KiB
JSON
208 lines
9.2 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-2026-77763",
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"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"state": "PUBLISHED",
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"assignerShortName": "VulnCheck",
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"dateReserved": "2026-08-21T10:30:49.467Z",
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"datePublished": "2026-08-21T11:05:13.650Z",
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"dateUpdated": "2026-11-08T14:08:56.782Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"shortName": "VulnCheck",
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"dateUpdated": "2026-11-08T14:08:56.782Z"
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},
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"datePublic": "2026-08-15T00:00:00.000Z",
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"title": "JuiceFS Local Filestore Backend Joins Object Keys onto the Storage Root Without a Containment Check, Allowing Writes Outside the Configured Directory",
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"descriptions": [
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{
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"lang": "en",
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"value": "The filestore backend in pkg/object/file.go, used for file:// stores and as a common juicefs sync destination, derived every operation's target from path(key), which returned either filepath.Join(d.root, key) or filepath.Clean(d.root + key) with no check that the result stayed beneath the root. Put, Get, Head, Delete, Chmod, Chown, Symlink and Readlink all consumed that value directly. Object keys enumerated from a source object store during a sync are not constrained the way local filesystem names are, so a key containing traversal segments causes juicefs to write attacker-supplied content to a path outside the intended local destination, and no error is returned. An operator syncing from a bucket whose contents they do not fully control, such as a shared or public bucket or one an attacker can write to, is therefore exposed to a file write at an attacker-influenced location. The fix changes path() to return an error and rejects any key whose resolved path escapes the root."
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
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"cweId": "CWE-22",
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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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"affected": [
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{
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"vendor": "juicedata",
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"product": "juicefs",
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"defaultStatus": "unaffected",
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"repo": "https://github.com/juicedata/juicefs",
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"collectionURL": "https://proxy.golang.org",
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"packageName": "github.com/juicedata/juicefs",
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"packageURL": "pkg:golang/github.com/juicedata/juicefs",
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"versions": [
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{
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"version": "0",
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"lessThanOrEqual": "1.4.1",
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"status": "affected",
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"versionType": "semver"
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}
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],
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"programFiles": [
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"pkg/object/file.go"
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:juicedata:juicefs:*:*:*:*:*:*:*:*",
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"versionEndIncluding": "1.4.1"
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}
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]
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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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"format": "CVSS",
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "REQUIRED",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "HIGH",
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"availabilityImpact": "NONE",
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"baseScore": 6.5,
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"baseSeverity": "MEDIUM"
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}
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},
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{
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"format": "CVSS",
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"cvssV4_0": {
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"version": "4.0",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "PASSIVE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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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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"url": "https://github.com/juicedata/juicefs/issues/7401",
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"tags": [
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"issue-tracking"
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],
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"name": "GitHub Issue #7401"
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},
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{
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"url": "https://github.com/juicedata/juicefs/commit/0bcd70b3d13088d38127d6fb5750c91be7c4ec16",
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"tags": [
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"patch"
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],
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"name": "object/file: reject object keys that escape the filestore root (#7425)"
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},
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{
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"url": "https://github.com/juicedata/juicefs/pull/7425",
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"tags": [
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"issue-tracking",
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"patch"
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],
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"name": "GitHub Pull Request #7425"
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},
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{
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"url": "https://github.com/juicedata/juicefs/blob/v1.4.1/pkg/object/file.go",
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"tags": [
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"technical-description"
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],
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"name": "filestore path() without a containment check at v1.4.1"
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},
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{
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"url": "https://github.com/juicedata/juicefs",
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"tags": [
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"product"
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]
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},
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{
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"name": "VulnCheck Advisory: JuiceFS Local Filestore Backend Joins Object Keys onto the Storage Root Without a Containment Check, Allowing Writes Outside the Configured Directory",
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"tags": [
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"third-party-advisory"
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],
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"url": "https://www.vulncheck.com/advisories/juicefs-local-filestore-backend-joins-object-keys-onto-the-storage-root-without-a-containment-check-allowing-writes-outside-the-configured-directory"
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "George Chen",
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"type": "finder"
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}
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],
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"x_generator": {
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"engine": "vulncheck-endgame"
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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": "2026-08-21T21:32:48.194454Z",
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"id": "CVE-2026-77763",
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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": "2026-08-21T21:44:37.044Z"
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}
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}
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]
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}
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} |