Vulnerability-Lookup

WID-SEC-W-2023-1314

Vulnerability from csaf_certbund - Published: 2023-05-29 22:00 - Updated: 2023-05-29 22:00

Summary

libarchive: Schwachstelle ermöglicht Manipulation von Dateien

Severity

Niedrig

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: libarchive ist eine C Bibliothek und ein Kommandozeilen-Tool zum Lesen und Bearbeiten von tar, cpio, zip, ISO und anderen Formaten.

Angriff: Ein lokaler Angreifer kann eine Schwachstelle in libarchive ausnutzen, um Dateien zu manipulieren.

Betroffene Betriebssysteme: - UNIX - Linux - Windows - Sonstiges

CVE-2023-30571

Es existiert eine Schwachstelle in libarchive. Der umask()-Aufruf in archive_write_disk_posix.c ändert die umask des gesamten Prozesses für eine sehr kurze Zeitspanne; eine Race Condition mit einem anderen Thread kann zu einer permanenten umask 0-Einstellung führen. Eine solche Race Condition könnte zur impliziten Erstellung von Verzeichnissen mit den Rechten 0777 (ohne das Sticky-Bit) führen. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um Dateien innerhalb dieser Verzeichnisse zu löschen oder umzubenennen.

Affected products

Last affected 1 product

Product	Identifier	Version	Remediation
Open Source libarchive <= 3.6.2 Open Source	`cpe:/a:libarchive:libarchive:3.6.2`	—

References

3 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://bugzilla.redhat.com/show_bug.cgi?id=2210921	external

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": "libarchive ist eine C Bibliothek und ein Kommandozeilen-Tool zum Lesen und Bearbeiten von tar, cpio, zip, ISO und anderen Formaten.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann eine Schwachstelle in libarchive ausnutzen, um Dateien zu manipulieren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- UNIX\n- Linux\n- Windows\n- Sonstiges",
        "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-2023-1314 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-1314.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-1314 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-1314"
      },
      {
        "category": "external",
        "summary": "RedHat Bugzilla vom 2023-05-29",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2210921"
      }
    ],
    "source_lang": "en-US",
    "title": "libarchive: Schwachstelle erm\u00f6glicht Manipulation von Dateien",
    "tracking": {
      "current_release_date": "2023-05-29T22:00:00.000+00:00",
      "generator": {
        "date": "2024-08-15T17:51:30.833+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.5"
        }
      },
      "id": "WID-SEC-W-2023-1314",
      "initial_release_date": "2023-05-29T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2023-05-29T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Open Source libarchive \u003c= 3.6.2",
            "product": {
              "name": "Open Source libarchive \u003c= 3.6.2",
              "product_id": "T027890",
              "product_identification_helper": {
                "cpe": "cpe:/a:libarchive:libarchive:3.6.2"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-30571",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in libarchive. Der umask()-Aufruf in archive_write_disk_posix.c \u00e4ndert die umask des gesamten Prozesses f\u00fcr eine sehr kurze Zeitspanne; eine Race Condition mit einem anderen Thread kann zu einer permanenten umask 0-Einstellung f\u00fchren. Eine solche Race Condition k\u00f6nnte zur impliziten Erstellung von Verzeichnissen mit den Rechten 0777 (ohne das Sticky-Bit) f\u00fchren. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um Dateien innerhalb dieser Verzeichnisse zu l\u00f6schen oder umzubenennen."
        }
      ],
      "product_status": {
        "last_affected": [
          "T027890"
        ]
      },
      "release_date": "2023-05-29T22:00:00.000+00:00",
      "title": "CVE-2023-30571"
    }
  ]
}

CVE-2023-30571 (GCVE-0-2023-30571)

Vulnerability from cvelistv5 – Published: 2023-05-29 00:00 – Updated: 2025-01-14 17:07

Summary

Libarchive through 3.6.2 can cause directories to have world-writable permissions. The umask() call inside archive_write_disk_posix.c changes the umask of the whole process for a very short period of time; a race condition with another thread can lead to a permanent umask 0 setting. Such a race condition could lead to implicit directory creation with permissions 0777 (without the sticky bit), which means that any low-privileged local user can delete and rename files inside those directories.

Severity

3.9 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-01-14 17:07 UTC

CWE

n/a
CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Assigner

mitre mitre root Scorecard

References

2 references

URL	Tags
https://groups.google.com/g/libarchive-announce
https://github.com/libarchive/libarchive/issues/1876

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T14:28:51.957Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://groups.google.com/g/libarchive-announce"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/libarchive/libarchive/issues/1876"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-30571",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-01-14T17:07:24.189386Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-362",
                "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-01-14T17:07:29.493Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Libarchive through 3.6.2 can cause directories to have world-writable permissions. The umask() call inside archive_write_disk_posix.c changes the umask of the whole process for a very short period of time; a race condition with another thread can lead to a permanent umask 0 setting. Such a race condition could lead to implicit directory creation with permissions 0777 (without the sticky bit), which means that any low-privileged local user can delete and rename files inside those directories."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 3.9,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AC:H/AV:L/A:N/C:L/I:L/PR:L/S:C/UI:R",
            "version": "3.1"
          }
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      ],
      "problemTypes": [
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          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
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      "providerMetadata": {
        "dateUpdated": "2023-05-29T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://groups.google.com/g/libarchive-announce"
        },
        {
          "url": "https://github.com/libarchive/libarchive/issues/1876"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-30571",
    "datePublished": "2023-05-29T00:00:00.000Z",
    "dateReserved": "2023-04-12T00:00:00.000Z",
    "dateUpdated": "2025-01-14T17:07:29.493Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

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.
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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WID-SEC-W-2023-1314

CVE-2023-30571 (GCVE-0-2023-30571)

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