csaf_certbund - wid-sec-w-2024-0004

WID-SEC-W-2024-0004

Vulnerability from csaf_certbund - Published: 2024-01-02 23:00 - Updated: 2024-03-18 23:00

Summary

w3m: 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

w3m ist ein Text File Viewer und kann auch als Textmodus Web-Browser genutzt werden.

Angriff

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in w3m ausnutzen, um einen Denial of Service Angriff durchzuführen.

Betroffene Betriebssysteme

- UNIX - Linux - MacOS X

JSON

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": "w3m ist ein Text File Viewer und kann auch als Textmodus Web-Browser genutzt werden.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in w3m ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- UNIX\n- Linux\n- MacOS X",
        "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-2024-0004 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-0004.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2024-0004 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-0004"
      },
      {
        "category": "external",
        "summary": "National Vulnerability Database CVE-2023-4255 vom 2024-01-02",
        "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4255"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:0014-1 vom 2024-01-02",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-January/017586.html"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory vom 2024-01-02",
        "url": "https://github.com/advisories/GHSA-hx3r-ph4g-9px9"
      },
      {
        "category": "external",
        "summary": "Proof of Concept (PoC)",
        "url": "https://github.com/tats/w3m/issues/268"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6580-1 vom 2024-01-15",
        "url": "https://ubuntu.com/security/notices/USN-6580-1"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2024-3FC66F8BF3 vom 2024-03-19",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2024-3fc66f8bf3"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2024-AEB75F8B5B vom 2024-03-19",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2024-aeb75f8b5b"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-EPEL-2024-BF31852FE0 vom 2024-03-19",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2024-bf31852fe0"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-EPEL-2024-5253D48B14 vom 2024-03-19",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2024-5253d48b14"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-EPEL-2024-0398EBBBFA vom 2024-03-19",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2024-0398ebbbfa"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2024-38C2261CA0 vom 2024-03-19",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2024-38c2261ca0"
      }
    ],
    "source_lang": "en-US",
    "title": "w3m: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2024-03-18T23:00:00.000+00:00",
      "generator": {
        "date": "2024-08-15T18:03:14.300+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.5"
        }
      },
      "id": "WID-SEC-W-2024-0004",
      "initial_release_date": "2024-01-02T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2024-01-02T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2024-01-15T23:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2024-03-18T23:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Fedora aufgenommen"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "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": [
          {
            "category": "product_name",
            "name": "Open Source w3m",
            "product": {
              "name": "Open Source w3m",
              "product_id": "T031846",
              "product_identification_helper": {
                "cpe": "cpe:/a:w3m:w3m:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "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-2023-4255",
      "notes": [
        {
          "category": "description",
          "text": "Es besteht eine Schwachstelle in w3m. Dieser Fehler besteht in der Backspace-Behandlung der checkType()-Funktion in der Datei etc.c aufgrund eines Out-of-bounds-Schreibproblems. Durch die Bereitstellung einer speziell gestalteten HTML-Datei kann ein entfernter, anonymer Angreifer diese Schwachstelle ausnutzen, um einen Denial-of-Service-Zustand zu verursachen. Eine erfolgreiche Ausnutzung erfordert eine Benutzerinteraktion."
        }
      ],
      "product_status": {
        "known_affected": [
          "T000126",
          "T031846",
          "74185"
        ]
      },
      "release_date": "2024-01-02T23:00:00.000+00:00",
      "title": "CVE-2023-4255"
    }
  ]
}

CVE-2023-4255 (GCVE-0-2023-4255)

Vulnerability from cvelistv5 – Published: 2023-12-21 16:08 – Updated: 2025-02-13 17:09

Summary

An out-of-bounds write issue has been discovered in the backspace handling of the checkType() function in etc.c within the W3M application. This vulnerability is triggered by supplying a specially crafted HTML file to the w3m binary. Exploitation of this flaw could lead to application crashes, resulting in a denial of service condition.

Severity ?

5.5 (Medium)


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

CWE

CWE-787 - Out-of-bounds Write

Assigner

redhat

References

URL

Tags

	https://bugzilla.redhat.com/show_bug.cgi?id=2255207	issue-trackingx_refsource_REDHAT
	https://github.com/tats/w3m/commit/edc602651c506a…
	https://github.com/tats/w3m/issues/268
	https://github.com/tats/w3m/pull/273
	https://lists.fedoraproject.org/archives/list/pac…
	https://lists.fedoraproject.org/archives/list/pac…
	https://lists.fedoraproject.org/archives/list/pac…

Impacted products

Vendor

Product

Version

n/a

w3m

	Fedora	Fedora
	Fedora	Extra Packages for Enterprise Linux

Credits

Red Hat would like to thank iskindar97@gmail.com for reporting this issue.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T07:24:03.587Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://github.com/tats/w3m/commit/edc602651c506aeeb60544b55534dd1722a340d3"
          },
          {
            "tags": [
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            "url": "https://github.com/tats/w3m/issues/268"
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    "cna": {
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        }
      ],
      "metrics": [
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          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
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            "attackVector": "LOCAL",
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            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
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  "cveMetadata": {
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    "datePublished": "2023-12-21T16:08:39.691Z",
    "dateReserved": "2023-08-08T20:16:01.838Z",
    "dateUpdated": "2025-02-13T17:09:26.229Z",
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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-2024-0004

CVE-2023-4255 (GCVE-0-2023-4255)

Tags

Sightings

Nomenclature