github - ghsa-5cwj-wmj7-j224

GHSA-5CWJ-WMJ7-J224

Vulnerability from github – Published: 2022-05-24 16:45 – Updated: 2024-04-04 00:41

Details

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.

Severity ?

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2018-20839"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-05-17T04:29:00Z",
    "severity": "CRITICAL"
  },
  "details": "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.",
  "id": "GHSA-5cwj-wmj7-j224",
  "modified": "2024-04-04T00:41:34Z",
  "published": "2022-05-24T16:45:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20839"
    },
    {
      "type": "WEB",
      "url": "https://github.com/systemd/systemd/pull/12378"
    },
    {
      "type": "WEB",
      "url": "https://github.com/systemd/systemd/commit/9725f1a10f80f5e0ae7d9b60547458622aeb322f"
    },
    {
      "type": "WEB",
      "url": "https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1803993"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E"
    },
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      "type": "WEB",
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    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20190530-0002"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/108389"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2018-20839 (GCVE-0-2018-20839)

Vulnerability from cvelistv5 – Published: 2019-05-17 03:39 – Updated: 2024-08-05 12:12

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://bugs.launchpad.net/ubuntu/+source/systemd…	x_refsource_MISC
	https://github.com/systemd/systemd/commit/9725f1a…	x_refsource_MISC
	https://github.com/systemd/systemd/pull/12378	x_refsource_MISC
	http://www.securityfocus.com/bid/108389	vdb-entryx_refsource_BID
	https://security.netapp.com/advisory/ntap-2019053…	x_refsource_CONFIRM
	https://lists.apache.org/thread.html/rf9fa47ab664…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-5CWJ-WMJ7-J224

CVE-2018-20839 (GCVE-0-2018-20839)

Tags

Sightings

Nomenclature