{ "id": "CVE-2023-2640", "sourceIdentifier": "security@ubuntu.com", "published": "2023-07-26T02:15:09.300", "lastModified": "2024-11-21T07:58:59.060", "vulnStatus": "Modified", "cveTags": [], "descriptions": [ { "lang": "en", "value": "On Ubuntu kernels carrying both c914c0e27eb0 and \"UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs\", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks." } ], "metrics": { "cvssMetricV31": [ { "source": "security@ubuntu.com", "type": "Secondary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH" }, "exploitabilityScore": 1.8, "impactScore": 5.9 }, { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH" }, "exploitabilityScore": 1.8, "impactScore": 5.9 } ] }, "weaknesses": [ { "source": "security@ubuntu.com", "type": "Secondary", "description": [ { "lang": "en", "value": "CWE-863" } ] }, { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-863" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:canonical:ubuntu_linux:23.04:*:*:*:*:*:*:*", "matchCriteriaId": "B2E702D7-F8C0-49BF-9FFB-883017076E98" } ] } ] } ], "references": [ { "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640", "source": "security@ubuntu.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html", "source": "security@ubuntu.com", "tags": [ "Mailing List", "Patch" ] }, { "url": "https://ubuntu.com/security/notices/USN-6250-1", "source": "security@ubuntu.com", "tags": [ "Vendor Advisory" ] }, { "url": "https://wiz.io/blog/ubuntu-overlayfs-vulnerability", "source": "security@ubuntu.com", "tags": [ "Exploit", "Mitigation", "Third Party Advisory" ] }, { "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ] }, { "url": "https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Mailing List", "Patch" ] }, { "url": "https://ubuntu.com/security/notices/USN-6250-1", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Vendor Advisory" ] }, { "url": "https://wiz.io/blog/ubuntu-overlayfs-vulnerability", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Exploit", "Mitigation", "Third Party Advisory" ] } ] }