CVE-2015-1340

chmod race in doUidshiftIntoContainer

View on CVE.org

Published Apr 22, 2019 CVSS 3.0 · 7 High EPSS < 1% KEV · Not listed

Description

LXD before version 0.19-0ubuntu5 doUidshiftIntoContainer() has an unsafe Chmod() call that races against the stat in the Filepath.Walk() function. A symbolic link created in that window could cause any file on the system to have any mode of the attacker's choice.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Ubuntu

LXD

affected

Version	Status	Constraints
`unspecified`	affected	< 0.19-0ubuntu5

Configuration 1 [-]

cpe:2.3:a:linuxcontainers:lxd:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2022-3203	LXD before version 0.19-0ubuntu5 doUidshiftIntoContainer() has an unsafe Chmod() call that races against the stat in the Filepath.Walk() function. A symbolic link created in that window could cause any file on the system to have any mode of the attacker's choice.
Github GHSA	GHSA-8mpq-fmr3-6jxv	LXD vulnerable to Race Condition

Metrics

No CVSS v4.0

No CVSS v3.1

Attack Vector Physical

Attack Complexity High

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.896% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/lxc/lxd/commit/19c6961cc1012c8a529f20807328a9357f5034f4

History

No history.

Subscriptions

Linuxcontainers Lxd

Weaknesses

CWE-362

Sources

CVE record Updated: Sep 17, 2024, 1:10 AM

Status: PUBLISHED
Assigner: canonical
Published: Apr 22, 2019, 3:35 PM
Updated: Sep 17, 2024, 1:10 AM
Reserved: Jan 22, 2015, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 12:22 AM

Status: Modified
Published: Apr 22, 2019, 4:29 PM
Modified: Jun 17, 2026, 12:22 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "LXD", "vendor": "Ubuntu", "versions": [{"lessThan": "0.19-0ubuntu5", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "datePublic": "2015-10-02T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "LXD before version 0.19-0ubuntu5 doUidshiftIntoContainer() has an unsafe Chmod() call that races against the stat in the Filepath.Walk() function. A symbolic link created in that window could cause any file on the system to have any mode of the attacker's choice."}], "metrics": [{"cvssV3_0": {"attackComplexity": "HIGH", "attackVector": "PHYSICAL", "availabilityImpact": "HIGH", "baseScore": 7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"description": "Race condition.", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2019-04-22T15:35:59.000Z", "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "shortName": "canonical"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://github.com/lxc/lxd/commit/19c6961cc1012c8a529f20807328a9357f5034f4"}], "source": {"defect": ["https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/1502270"], "discovery": "INTERNAL"}, "title": "chmod race in doUidshiftIntoContainer", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@ubuntu.com", "DATE_PUBLIC": "2015-10-02T00:00:00.000Z", "ID": "CVE-2015-1340", "STATE": "PUBLIC", "TITLE": "chmod race in doUidshiftIntoContainer"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "LXD", "version": {"version_data": [{"affected": "<", "version_affected": "<", "version_value": "0.19-0ubuntu5"}]}}]}, "vendor_name": "Ubuntu"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "LXD before version 0.19-0ubuntu5 doUidshiftIntoContainer() has an unsafe Chmod() call that races against the stat in the Filepath.Walk() function. A symbolic link created in that window could cause any file on the system to have any mode of the attacker's choice."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "PHYSICAL", "availabilityImpact": "HIGH", "baseScore": 7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.0"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Race condition."}]}]}, "references": {"reference_data": [{"name": "https://github.com/lxc/lxd/commit/19c6961cc1012c8a529f20807328a9357f5034f4", "refsource": "MISC", "url": "https://github.com/lxc/lxd/commit/19c6961cc1012c8a529f20807328a9357f5034f4"}]}, "source": {"defect": ["https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/1502270"], "discovery": "INTERNAL"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T04:40:18.497Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/lxc/lxd/commit/19c6961cc1012c8a529f20807328a9357f5034f4"}]}]}, "cveMetadata": {"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "assignerShortName": "canonical", "cveId": "CVE-2015-1340", "datePublished": "2019-04-22T15:35:59.288Z", "dateReserved": "2015-01-22T00:00:00.000Z", "dateUpdated": "2024-09-17T01:10:47.579Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "LXD", "vendor": "Ubuntu", "versions": [{"lessThan": "0.19-0ubuntu5", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@ubuntu.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:linuxcontainers:lxd:-:*:*:*:*:*:*:*", "matchCriteriaId": "0CA5DE4F-5C5D-4013-B838-F9A0548AD004", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "LXD before version 0.19-0ubuntu5 doUidshiftIntoContainer() has an unsafe Chmod() call that races against the stat in the Filepath.Walk() function. A symbolic link created in that window could cause any file on the system to have any mode of the attacker's choice."}, {"lang": "es", "value": "LXD anterior a la versi\u00f3n 0,19-0ubuntu5 la funci\u00f3n doUidshiftIntoContainer() presenta una llamada no segura chmod() que corre contra la STAT en la funci\u00f3n FilePath.Walk(). Un enlace simb\u00f3lico creado en esa ventana podr\u00eda hacer que cualquier archivo en el sistema tuviera cualquier modo de elecci\u00f3n del atacante."}], "id": "CVE-2015-1340", "lastModified": "2026-06-17T00:22:13.613", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "PHYSICAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 0.4, "impactScore": 6.0, "source": "security@ubuntu.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-04-22T16:29:00.897", "references": [{"source": "security@ubuntu.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/lxc/lxd/commit/19c6961cc1012c8a529f20807328a9357f5034f4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/lxc/lxd/commit/19c6961cc1012c8a529f20807328a9357f5034f4"}], "sourceIdentifier": "security@ubuntu.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}