fkie_cve-2018-20839
Vulnerability from fkie_nvd
Published
2019-05-17 04:29
Modified
2025-05-05 14:14
Severity ?
Summary
systemd 242 changes the VT1 mode upon a logout, which allows attackers to read cleartext passwords in certain circumstances, such as watching a shutdown, or using Ctrl-Alt-F1 and Ctrl-Alt-F2. This occurs because the KDGKBMODE (aka current keyboard mode) check is mishandled.
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
systemd_project | systemd | 242 | |
netapp | cn1610_firmware | - | |
netapp | cn1610 | - | |
netapp | snapprotect | - | |
netapp | solidfire_\&_hci_management_node | - |
{ "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:systemd_project:systemd:242:-:*:*:*:*:*:*", "matchCriteriaId": "A00408E2-96BE-44A7-A389-90C6F6DE8157", "vulnerable": true } ], "negate": false, "operator": "OR" } ] }, { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:netapp:cn1610_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "EB30733E-68FC-49C4-86C0-7FEE75C366BF", "vulnerable": true } ], "negate": false, "operator": "OR" }, { "cpeMatch": [ { "criteria": "cpe:2.3:h:netapp:cn1610:-:*:*:*:*:*:*:*", "matchCriteriaId": "6361DAC6-600F-4B15-8797-D67F298F46FB", "vulnerable": false } ], "negate": false, "operator": "OR" } ], "operator": "AND" }, { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:netapp:snapprotect:-:*:*:*:*:*:*:*", "matchCriteriaId": "F74F467A-0C81-40D9-BA06-40FB8EF02C04", "vulnerable": true }, { "criteria": "cpe:2.3:a:netapp:solidfire_\\\u0026_hci_management_node:-:*:*:*:*:*:*:*", "matchCriteriaId": "D6D700C5-F67F-4FFB-BE69-D524592A3D2E", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "descriptions": [ { "lang": "en", "value": "systemd 242 changes the VT1 mode upon a logout, which allows attackers to read cleartext passwords in certain circumstances, such as watching a shutdown, or using Ctrl-Alt-F1 and Ctrl-Alt-F2. This occurs because the KDGKBMODE (aka current keyboard mode) check is mishandled." }, { "lang": "es", "value": "El systemd 242 cambia el VT1 mode al terminar la sesi\u00f3n, esto permite a los atacantes leer contrase\u00f1as de texto simple en algunas circunstancias, tales como ver un apagado o usar Ctrl-Alt-F1 y Ctrl-Alt-F2. Esto ocurre porque la comprobaci\u00f3n KDGKBMODE (tambi\u00e9n conocido como modo de teclado actual) es manejada incorrectamente." } ], "id": "CVE-2018-20839", "lastModified": "2025-05-05T14:14:36.570", "metrics": { "cvssMetricV2": [ { "acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": { "accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0" }, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false } ], "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "PHYSICAL", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1" }, "exploitabilityScore": 0.7, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary" } ] }, "published": "2019-05-17T04:29:00.933", "references": [ { "source": "cve@mitre.org", "tags": [ "Broken Link", "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/108389" }, { "source": "cve@mitre.org", "tags": [ "Issue Tracking", "Third Party Advisory" ], "url": "https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1803993" }, { "source": "cve@mitre.org", "tags": [ "Patch" ], "url": "https://github.com/systemd/systemd/commit/9725f1a10f80f5e0ae7d9b60547458622aeb322f" }, { "source": "cve@mitre.org", "tags": [ "Issue Tracking", "Patch" ], "url": "https://github.com/systemd/systemd/pull/12378" }, { "source": "cve@mitre.org", "tags": [ "Mailing List" ], "url": "https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ], "url": "https://security.netapp.com/advisory/ntap-20190530-0002/" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Broken Link", "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/108389" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Issue Tracking", "Third Party Advisory" ], "url": "https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1803993" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch" ], "url": "https://github.com/systemd/systemd/commit/9725f1a10f80f5e0ae7d9b60547458622aeb322f" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Issue Tracking", "Patch" ], "url": "https://github.com/systemd/systemd/pull/12378" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Mailing List" ], "url": "https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://security.netapp.com/advisory/ntap-20190530-0002/" } ], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [ { "description": [ { "lang": "en", "value": "NVD-CWE-noinfo" } ], "source": "nvd@nist.gov", "type": "Primary" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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