WID-SEC-W-2022-1750

Vulnerability from csaf_certbund - Published: 2021-02-24 23:00 - Updated: 2024-06-18 22:00
Summary
GNU libc: Schwachstelle ermöglicht Denial of Service
Severity
Mittel
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: Die GNU libc ist die Basis C Bibliothek unter Linux sowie anderen Unix-Betriebssystemen, welche die Systemaufrufe sowie Basisfunktionalität bereitstellt.
Angriff: Ein entfernter, anonymer Angreifer kann eine Schwachstelle in GNU libc ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme: - Linux - UNIX
CVE-2021-27645

Es existiert eine Schwachstelle in GNU libc. Bei der Verarbeitung einer Anforderung für die Netgroup-Suche stürzt der Nameserver-Caching-Daemon (nscd) unter bestimmten Umständen aufgrund eines Double-Free ab. Ein entfernter anonymer Angreifer kann diese Schwachstelle ausnutzen, um einen Denial of Service zu verursachen.

Affected products
Product Identifier Version Remediation
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
IGEL OS
IGEL
 cpe:/o:igel:os:- —
Ubuntu Linux
Ubuntu
 cpe:/o:canonical:ubuntu_linux:- —
Gentoo Linux
Gentoo
 cpe:/o:gentoo:linux:- —
Oracle Linux
Oracle
 cpe:/o:oracle:linux:- —
Product Identifier Version Remediation
Open Source GNU libc <=2.33
Open Source / GNU libc
 <=2.33
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "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": "Die GNU libc ist die Basis C Bibliothek unter Linux sowie anderen Unix-Betriebssystemen, welche die Systemaufrufe sowie Basisfunktionalit\u00e4t bereitstellt.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in GNU libc ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- UNIX",
        "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-2022-1750 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-1750.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2022-1750 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-1750"
      },
      {
        "category": "external",
        "summary": "RedHat Bugzilla vom 2021-02-24",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1932589"
      },
      {
        "category": "external",
        "summary": "Gentoo Linux Security Advisory GLSA-202107-07 vom 2021-07-06",
        "url": "https://security.gentoo.org/glsa/202107-07"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:4358 vom 2021-11-09",
        "url": "https://access.redhat.com/errata/RHSA-2021:4358"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2021-9560 vom 2021-11-23",
        "url": "https://linux.oracle.com/errata/ELSA-2021-9560.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:4848 vom 2021-11-29",
        "url": "https://access.redhat.com/errata/RHSA-2021:4848"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:0318 vom 2022-01-27",
        "url": "https://access.redhat.com/errata/RHSA-2022:0318"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:0434 vom 2022-02-04",
        "url": "https://access.redhat.com/errata/RHSA-2022:0434"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5310-1 vom 2022-03-01",
        "url": "https://ubuntu.com/security/notices/USN-5310-1"
      },
      {
        "category": "external",
        "summary": "IGEL Security Notice ISN-2022-03 vom 2022-03-09",
        "url": "https://kb.igel.com/securitysafety/en/isn-2022-03-glibc-denial-of-service-in-igel-os-57319339.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:0856 vom 2022-03-14",
        "url": "https://access.redhat.com/errata/RHSA-2022:0856"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-3152 vom 2022-10-17",
        "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2024-3588 vom 2024-06-06",
        "url": "https://linux.oracle.com/errata/ELSA-2024-3588.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2024-12442 vom 2024-06-18",
        "url": "https://linux.oracle.com/errata/ELSA-2024-12442.html"
      }
    ],
    "source_lang": "en-US",
    "title": "GNU libc: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2024-06-18T22:00:00.000+00:00",
      "generator": {
        "date": "2024-08-15T17:36:36.654+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.5"
        }
      },
      "id": "WID-SEC-W-2022-1750",
      "initial_release_date": "2021-02-24T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2021-02-24T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2021-07-05T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Gentoo aufgenommen"
        },
        {
          "date": "2021-11-09T23:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-11-22T23:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2021-11-29T23:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-01-27T23:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-02-03T23:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-03-01T23:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2022-03-08T23:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von IGEL aufgenommen"
        },
        {
          "date": "2022-03-14T23:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-10-17T22:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2024-06-05T22:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2024-06-18T22:00:00.000+00:00",
          "number": "13",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        }
      ],
      "status": "final",
      "version": "13"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Debian Linux",
            "product": {
              "name": "Debian Linux",
              "product_id": "2951",
              "product_identification_helper": {
                "cpe": "cpe:/o:debian:debian_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Debian"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Gentoo Linux",
            "product": {
              "name": "Gentoo Linux",
              "product_id": "T012167",
              "product_identification_helper": {
                "cpe": "cpe:/o:gentoo:linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Gentoo"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "IGEL OS",
            "product": {
              "name": "IGEL OS",
              "product_id": "T017865",
              "product_identification_helper": {
                "cpe": "cpe:/o:igel:os:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "IGEL"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=2.29",
                "product": {
                  "name": "Open Source GNU libc \u003e=2.29",
                  "product_id": "T013508"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c=2.33",
                "product": {
                  "name": "Open Source GNU libc \u003c=2.33",
                  "product_id": "T018182"
                }
              }
            ],
            "category": "product_name",
            "name": "GNU libc"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Oracle Linux",
            "product": {
              "name": "Oracle Linux",
              "product_id": "T004914",
              "product_identification_helper": {
                "cpe": "cpe:/o:oracle:linux:-"
              }
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        ],
        "category": "vendor",
        "name": "Oracle"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Red Hat Enterprise Linux",
            "product": {
              "name": "Red Hat Enterprise Linux",
              "product_id": "67646",
              "product_identification_helper": {
                "cpe": "cpe:/o:redhat:enterprise_linux:-"
              }
            }
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        ],
        "category": "vendor",
        "name": "Red Hat"
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      {
        "branches": [
          {
            "category": "product_name",
            "name": "Ubuntu Linux",
            "product": {
              "name": "Ubuntu Linux",
              "product_id": "T000126",
              "product_identification_helper": {
                "cpe": "cpe:/o:canonical:ubuntu_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Ubuntu"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-27645",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in GNU libc. Bei der Verarbeitung einer Anforderung f\u00fcr die Netgroup-Suche st\u00fcrzt der Nameserver-Caching-Daemon (nscd) unter bestimmten Umst\u00e4nden aufgrund eines Double-Free ab. Ein entfernter anonymer Angreifer kann diese Schwachstelle ausnutzen, um einen Denial of Service zu verursachen."
        }
      ],
      "product_status": {
        "known_affected": [
          "2951",
          "67646",
          "T017865",
          "T000126",
          "T012167",
          "T004914"
        ],
        "last_affected": [
          "T018182"
        ]
      },
      "release_date": "2021-02-24T23:00:00.000+00:00",
      "title": "CVE-2021-27645"
    }
  ]
}



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