{ "containers": { "cna": { "affected": [ { "product": "Apport", "vendor": "Canonical", "versions": [ { "lessThan": "2.20.1-0ubuntu2.23", "status": "affected", "version": "2.20.1", "versionType": "custom" }, { "lessThan": "2.20.9-0ubuntu7.14", "status": "affected", "version": "2.20.9", "versionType": "custom" }, { "changes": [ { "at": "2.20.11-0ubuntu22", "status": "unaffected" } ], "lessThan": "2.20.11-0ubuntu8.8", "status": "affected", "version": "2.20.11", "versionType": "custom" } ] } ], "credits": [ { "lang": "en", "value": "Maximilien Bourgeteau" } ], "datePublic": "2020-04-02T00:00:00.000Z", "descriptions": [ { "lang": "en", "value": "Apport creates a world writable lock file with root ownership in the world writable /var/lock/apport directory. If the apport/ directory does not exist (this is not uncommon as /var/lock is a tmpfs), it will create the directory, otherwise it will simply continue execution using the existing directory. This allows for a symlink attack if an attacker were to create a symlink at /var/lock/apport, changing apport's lock file location. This file could then be used to escalate privileges, for example. Fixed in versions 2.20.1-0ubuntu2.23, 2.20.9-0ubuntu7.14, 2.20.11-0ubuntu8.8 and 2.20.11-0ubuntu22." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-379", "description": "CWE-379 Creation of Temporary File in Directory with Incorrect Permissions", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2020-06-24T20:06:02.000Z", "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "shortName": "canonical" }, "references": [ { "tags": [ "x_refsource_CONFIRM" ], "url": "https://launchpad.net/bugs/1862348" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://usn.ubuntu.com/4315-1/" }, { "name": "USN-4315-2", "tags": [ "vendor-advisory", "x_refsource_UBUNTU" ], "url": "https://usn.ubuntu.com/4315-2/" } ], "source": { "advisory": "https://usn.ubuntu.com/4315-1/", "defect": [ "https://launchpad.net/bugs/1862348" ], "discovery": "EXTERNAL" }, "title": "World writable root owned lock file created in user controllable location", "x_generator": { "engine": "Vulnogram 0.0.9" }, "x_legacyV4Record": { "CVE_data_meta": { "AKA": "", "ASSIGNER": "security@ubuntu.com", "DATE_PUBLIC": "2020-04-02T03:04:00.000Z", "ID": "CVE-2020-8831", "STATE": "PUBLIC", "TITLE": "World writable root owned lock file created in user controllable location" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Apport", "version": { "version_data": [ { "platform": "", "version_affected": "<", "version_name": "2.20.1", "version_value": "2.20.1-0ubuntu2.23" }, { "platform": "", "version_affected": "<", "version_name": "2.20.9", "version_value": "2.20.9-0ubuntu7.14" }, { "platform": "", "version_affected": "<", "version_name": "2.20.11", "version_value": "2.20.11-0ubuntu8.8" }, { "platform": "", "version_affected": "<", "version_name": "2.20.11", "version_value": "2.20.11-0ubuntu22" } ] } } ] }, "vendor_name": "Canonical" } ] } }, "configuration": [], "credit": [ { "lang": "eng", "value": "Maximilien Bourgeteau" } ], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "Apport creates a world writable lock file with root ownership in the world writable /var/lock/apport directory. If the apport/ directory does not exist (this is not uncommon as /var/lock is a tmpfs), it will create the directory, otherwise it will simply continue execution using the existing directory. This allows for a symlink attack if an attacker were to create a symlink at /var/lock/apport, changing apport's lock file location. This file could then be used to escalate privileges, for example. Fixed in versions 2.20.1-0ubuntu2.23, 2.20.9-0ubuntu7.14, 2.20.11-0ubuntu8.8 and 2.20.11-0ubuntu22." } ] }, "exploit": [], "generator": { "engine": "Vulnogram 0.0.9" }, "impact": { "cvss": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-379 Creation of Temporary File in Directory with Incorrect Permissions" } ] } ] }, "references": { "reference_data": [ { "name": "https://launchpad.net/bugs/1862348", "refsource": "CONFIRM", "url": "https://launchpad.net/bugs/1862348" }, { "name": "https://usn.ubuntu.com/4315-1/", "refsource": "CONFIRM", "url": "https://usn.ubuntu.com/4315-1/" }, { "name": "USN-4315-2", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4315-2/" } ] }, "solution": [], "source": { "advisory": "https://usn.ubuntu.com/4315-1/", "defect": [ "https://launchpad.net/bugs/1862348" ], "discovery": "EXTERNAL" }, "work_around": [] } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T10:12:10.889Z" }, "title": "CVE Program Container", "references": [ { "tags": [ "x_refsource_CONFIRM", "x_transferred" ], "url": "https://launchpad.net/bugs/1862348" }, { "tags": [ "x_refsource_CONFIRM", "x_transferred" ], "url": "https://usn.ubuntu.com/4315-1/" }, { "name": "USN-4315-2", "tags": [ "vendor-advisory", "x_refsource_UBUNTU", "x_transferred" ], "url": "https://usn.ubuntu.com/4315-2/" } ] } ] }, "cveMetadata": { "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "assignerShortName": "canonical", "cveId": "CVE-2020-8831", "datePublished": "2020-04-22T21:15:18.418Z", "dateReserved": "2020-02-10T00:00:00.000Z", "dateUpdated": "2024-09-16T19:00:55.009Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }