csaf_certbund - wid-sec-w-2023-0834

wid-sec-w-2023-0834

Vulnerability from csaf_certbund

Published

2023-04-03 22:00

Modified

2024-03-20 23:00

Summary

Linux Kernel: Schwachstelle ermöglicht Offenlegung von Informationen

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung

Der Kernel stellt den Kern des Linux Betriebssystems dar.

Angriff

Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um Informationen offenzulegen.

Betroffene Betriebssysteme

- Linux

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "niedrig"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Der Kernel stellt den Kern des Linux Betriebssystems dar.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um Informationen offenzulegen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2023-0834 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-0834.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-0834 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-0834"
      },
      {
        "category": "external",
        "summary": "RedHat Bugzilla vom 2023-04-03",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2019643"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2023:1801-1 vom 2023-04-10",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2023-April/014437.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2023:1800-1 vom 2023-04-10",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2023-April/014435.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2023:1803-1 vom 2023-04-10",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2023-April/014434.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2023:1811-1 vom 2023-04-11",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2023-April/014442.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2023:1848-1 vom 2023-04-14",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2023-April/014466.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2023:1894-1 vom 2023-04-18",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2023-April/014488.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2023:1892-1 vom 2023-04-18",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2023-April/014489.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2023:2232-1 vom 2023-05-17",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2023-May/014918.html"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin 7144861 vom 2024-03-20",
        "url": "https://www.ibm.com/support/pages/node/7144861"
      }
    ],
    "source_lang": "en-US",
    "title": "Linux Kernel: Schwachstelle erm\u00f6glicht Offenlegung von Informationen",
    "tracking": {
      "current_release_date": "2024-03-20T23:00:00.000+00:00",
      "generator": {
        "date": "2024-03-21T09:37:28.714+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "id": "WID-SEC-W-2023-0834",
      "initial_release_date": "2023-04-03T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2023-04-03T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2023-04-10T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2023-04-11T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2023-04-16T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2023-04-18T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2023-05-18T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2024-03-20T23:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von IBM aufgenommen"
        }
      ],
      "status": "final",
      "version": "7"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "Plus 10.1",
                "product": {
                  "name": "IBM Spectrum Protect Plus 10.1",
                  "product_id": "T015895",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ibm:spectrum_protect:plus_10.1"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Spectrum Protect"
          }
        ],
        "category": "vendor",
        "name": "IBM"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Open Source Linux Kernel",
            "product": {
              "name": "Open Source Linux Kernel",
              "product_id": "6368",
              "product_identification_helper": {
                "cpe": "cpe:/o:linux:linux_kernel:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "SUSE Linux",
            "product": {
              "name": "SUSE Linux",
              "product_id": "T002207",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:suse_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-3923",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle im Linux Kernel. Das Problem besteht in der Implementierung von RDMA \u00fcber Infiniband. Bei der Ausgabe von Befehlen an den Ger\u00e4teknoten /dev/infiniband/rdma_cm k\u00f6nnen Kernel-Stack-Informationen ausgelesen werden. Ein privilegierter Angreifer kann diese Schwachstelle ausnutzen, um Informationen offenzulegen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T002207",
          "6368",
          "T015895"
        ]
      },
      "release_date": "2023-04-03T22:00:00Z",
      "title": "CVE-2021-3923"
    }
  ]
}

cve-2021-3923

Vulnerability from cvelistv5

Published

2023-03-27 00:00

Modified

2024-08-03 17:09

Severity ?

Summary

A flaw was found in the Linux kernel's implementation of RDMA over infiniband. An attacker with a privileged local account can leak kernel stack information when issuing commands to the /dev/infiniband/rdma_cm device node. While this access is unlikely to leak sensitive user information, it can be further used to defeat existing kernel protection mechanisms.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=2019643
	https://lore.kernel.org/all/20220204100036.GA12348%40kili/

Impacted products

▼	Vendor	Product
	n/a	kernel

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:09:09.735Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2019643"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lore.kernel.org/all/20220204100036.GA12348%40kili/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kernel",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "unknown"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the Linux kernel\u0027s implementation of RDMA over infiniband. An attacker with a privileged local account can leak kernel stack information when issuing commands to the /dev/infiniband/rdma_cm device node. While this access is unlikely to leak sensitive user information, it can be further used to defeat existing kernel protection mechanisms."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-03-27T00:00:00",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2019643"
        },
        {
          "url": "https://lore.kernel.org/all/20220204100036.GA12348%40kili/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-3923",
    "datePublished": "2023-03-27T00:00:00",
    "dateReserved": "2021-11-03T00:00:00",
    "dateUpdated": "2024-08-03T17:09:09.735Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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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