csaf_certbund - wid-sec-w-2024-1920

WID-SEC-W-2024-1920

Vulnerability from csaf_certbund - Published: 2024-08-25 22:00 - Updated: 2025-06-03 22:00

Summary

vim: Schwachstelle ermöglicht Denial of Service

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

Vim (Vi IMproved) ist eine Weiterentwicklung des Texteditors vi.

Angriff

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in vim ausnutzen, um einen Denial of Service Angriff durchzuführen.

Betroffene Betriebssysteme

- Linux - Windows

JSON

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{
  "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": "Vim (Vi IMproved) ist eine Weiterentwicklung des Texteditors vi.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in vim ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- Windows",
        "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-2024-1920 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-1920.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2024-1920 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-1920"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-4ghr-c62x-cqfh vom 2024-08-25",
        "url": "https://github.com/vim/vim/security/advisories/GHSA-4ghr-c62x-cqfh"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2024-2960D36420 vom 2024-08-30",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2024-2960d36420"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2024-BB4B6DA0B6 vom 2024-08-30",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2024-bb4b6da0b6"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2024-E4B68C962C vom 2024-08-30",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2024-e4b68c962c"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2024-055ADF8E6F vom 2024-09-07",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2024-055adf8e6f"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-7048-1 vom 2024-10-01",
        "url": "https://ubuntu.com/security/notices/USN-7048-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-7048-2 vom 2024-10-16",
        "url": "https://ubuntu.com/security/notices/USN-7048-2"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS-2024-2711 vom 2024-12-20",
        "url": "https://alas.aws.amazon.com/AL2/ALAS-2024-2711.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2025:0724-1 vom 2025-02-26",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2025-February/020447.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2025:0723-1 vom 2025-02-26",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/VO6TTCJMSOJJI42QG6B7VFI2SOUFCSAG/"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2025:0722-1 vom 2025-02-26",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2025-February/020449.html"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-4097 vom 2025-03-30",
        "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00023.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2025:20128-1 vom 2025-06-04",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2025-June/021251.html"
      }
    ],
    "source_lang": "en-US",
    "title": "vim: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2025-06-03T22:00:00.000+00:00",
      "generator": {
        "date": "2025-06-04T11:53:05.914+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.12"
        }
      },
      "id": "WID-SEC-W-2024-1920",
      "initial_release_date": "2024-08-25T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2024-08-25T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2024-08-26T22:00:00.000+00:00",
          "number": "2",
          "summary": "CVE-2024-43802 erg\u00e4nzt"
        },
        {
          "date": "2024-08-29T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Fedora aufgenommen"
        },
        {
          "date": "2024-09-01T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Fedora aufgenommen"
        },
        {
          "date": "2024-09-08T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Fedora aufgenommen"
        },
        {
          "date": "2024-10-01T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2024-10-15T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2024-12-19T23:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2025-02-26T23:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2025-03-30T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2025-06-03T22:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von SUSE aufgenommen"
        }
      ],
      "status": "final",
      "version": "11"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Amazon Linux 2",
            "product": {
              "name": "Amazon Linux 2",
              "product_id": "398363",
              "product_identification_helper": {
                "cpe": "cpe:/o:amazon:linux_2:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Amazon"
      },
      {
        "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": "Fedora Linux",
            "product": {
              "name": "Fedora Linux",
              "product_id": "74185",
              "product_identification_helper": {
                "cpe": "cpe:/o:fedoraproject:fedora:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Fedora"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c9.1.0697",
                "product": {
                  "name": "Open Source vim \u003c9.1.0697",
                  "product_id": "T037071"
                }
              },
              {
                "category": "product_version",
                "name": "9.1.0697",
                "product": {
                  "name": "Open Source vim 9.1.0697",
                  "product_id": "T037071-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:vim:vim:9.1.0697"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "vim"
          }
        ],
        "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"
      },
      {
        "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-2024-43802",
      "product_status": {
        "known_affected": [
          "2951",
          "T002207",
          "T000126",
          "T037071",
          "398363",
          "74185"
        ]
      },
      "release_date": "2024-08-25T22:00:00.000+00:00",
      "title": "CVE-2024-43802"
    }
  ]
}

CVE-2024-43802 (GCVE-0-2024-43802)

Vulnerability from cvelistv5 – Published: 2024-08-26 18:48 – Updated: 2025-11-03 20:38

Summary

Vim is an improved version of the unix vi text editor. When flushing the typeahead buffer, Vim moves the current position in the typeahead buffer but does not check whether there is enough space left in the buffer to handle the next characters. So this may lead to the tb_off position within the typebuf variable to point outside of the valid buffer size, which can then later lead to a heap-buffer overflow in e.g. ins_typebuf(). Therefore, when flushing the typeahead buffer, check if there is enough space left before advancing the off position. If not, fall back to flush current typebuf contents. It's not quite clear yet, what can lead to this situation. It seems to happen when error messages occur (which will cause Vim to flush the typeahead buffer) in comnination with several long mappgins and so it may eventually move the off position out of a valid buffer size. Impact is low since it is not easily reproducible and requires to have several mappings active and run into some error condition. But when this happens, this will cause a crash. The issue has been fixed as of Vim patch v9.1.0697. Users are advised to upgrade. There are no known workarounds for this issue.

Severity ?

4.5 (Medium)


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

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

GitHub_M

References

URL

Tags

	https://github.com/vim/vim/security/advisories/GH…	x_refsource_CONFIRM
	https://github.com/vim/vim/commit/322ba9108612bead5eb	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	vim	vim	Affected: < 9.1.0697

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-43802",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-28T14:28:07.231057Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-28T14:28:30.371Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:38:52.392Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://security.netapp.com/advisory/ntap-20241004-0008/"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00023.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "vim",
          "vendor": "vim",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 9.1.0697"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Vim is an improved version of the unix vi text editor. When flushing the typeahead buffer, Vim moves the current position in the typeahead buffer but does not check whether there is enough space left in the buffer to handle the next characters.  So this may lead to the tb_off position within the typebuf variable to point outside of the valid buffer size, which can then later lead to a heap-buffer overflow in e.g. ins_typebuf(). Therefore, when flushing the typeahead buffer, check if there is enough space left before advancing the off position. If not, fall back to flush current typebuf contents. It\u0027s not quite clear yet, what can lead to this situation. It seems to happen when error messages occur (which will cause Vim to flush the typeahead buffer) in comnination with several long mappgins and so it may eventually move the off position out of a valid buffer size. Impact is low since it is not easily reproducible and requires to have several mappings active and run into some error condition. But when this happens, this will cause a crash. The issue has been fixed as of Vim patch v9.1.0697. Users are advised to upgrade. There are no known workarounds for this issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 4.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "CWE-122: Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-08-26T18:48:11.979Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/vim/vim/security/advisories/GHSA-4ghr-c62x-cqfh",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/vim/vim/security/advisories/GHSA-4ghr-c62x-cqfh"
        },
        {
          "name": "https://github.com/vim/vim/commit/322ba9108612bead5eb",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/vim/vim/commit/322ba9108612bead5eb"
        }
      ],
      "source": {
        "advisory": "GHSA-4ghr-c62x-cqfh",
        "discovery": "UNKNOWN"
      },
      "title": "heap-buffer-overflow in ins_typebuf() in Vim \u003c 9.1.0697"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-43802",
    "datePublished": "2024-08-26T18:48:11.979Z",
    "dateReserved": "2024-08-16T14:20:37.326Z",
    "dateUpdated": "2025-11-03T20:38:52.392Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

WID-SEC-W-2024-1920

CVE-2024-43802 (GCVE-0-2024-43802)

Tags

Sightings

Nomenclature