fkie_cve-2025-8291
Vulnerability from fkie_nvd
Published
2025-10-07 18:16
Modified
2025-10-15 16:15
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Summary
The 'zipfile' module would not check the validity of the ZIP64 End of Central Directory (EOCD) Locator record offset value would not be used to locate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be assumed to be the previous record in the ZIP archive. This could be abused to create ZIP archives that are handled differently by the 'zipfile' module compared to other ZIP implementations. Remediation maintains this behavior, but checks that the offset specified in the ZIP64 EOCD Locator record matches the expected value.
References
cna@python.orghttps://github.com/python/cpython/commit/162997bb70e067668c039700141770687bc8f267
cna@python.orghttps://github.com/python/cpython/commit/1d29afb0d6218aa8fb5e1e4a6133a4778d89bb46
cna@python.orghttps://github.com/python/cpython/commit/333d4a6f4967d3ace91492a39ededbcf3faa76a6
cna@python.orghttps://github.com/python/cpython/commit/76437ac248ad8ca44e9bf697b02b1e2241df2196
cna@python.orghttps://github.com/python/cpython/commit/8392b2f0d35678407d9ce7d95655a5b77de161b4
cna@python.orghttps://github.com/python/cpython/commit/bca11ae7d575d87ed93f5dd6a313be6246e3e388
cna@python.orghttps://github.com/python/cpython/commit/d11e69d6203080e3ec450446bfed0516727b85c3
cna@python.orghttps://github.com/python/cpython/issues/139700
cna@python.orghttps://github.com/python/cpython/pull/139702
cna@python.orghttps://mail.python.org/archives/list/security-announce@python.org/thread/QECOPWMTH4VPPJAXAH2BGTA4XADOP62G/
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The \u0027zipfile\u0027 module would not check the validity of the ZIP64 End of\nCentral Directory (EOCD) Locator record offset value would not be used to\nlocate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be\nassumed to be the previous record in the ZIP archive. This could be abused\nto create ZIP archives that are handled differently by the \u0027zipfile\u0027 module\ncompared to other ZIP implementations.\n\n\nRemediation maintains this behavior, but checks that the offset specified\nin the ZIP64 EOCD Locator record matches the expected value."
    }
  ],
  "id": "CVE-2025-8291",
  "lastModified": "2025-10-15T16:15:36.573",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "cna@python.org",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-10-07T18:16:00.317",
  "references": [
    {
      "source": "cna@python.org",
      "url": "https://github.com/python/cpython/commit/162997bb70e067668c039700141770687bc8f267"
    },
    {
      "source": "cna@python.org",
      "url": "https://github.com/python/cpython/commit/1d29afb0d6218aa8fb5e1e4a6133a4778d89bb46"
    },
    {
      "source": "cna@python.org",
      "url": "https://github.com/python/cpython/commit/333d4a6f4967d3ace91492a39ededbcf3faa76a6"
    },
    {
      "source": "cna@python.org",
      "url": "https://github.com/python/cpython/commit/76437ac248ad8ca44e9bf697b02b1e2241df2196"
    },
    {
      "source": "cna@python.org",
      "url": "https://github.com/python/cpython/commit/8392b2f0d35678407d9ce7d95655a5b77de161b4"
    },
    {
      "source": "cna@python.org",
      "url": "https://github.com/python/cpython/commit/bca11ae7d575d87ed93f5dd6a313be6246e3e388"
    },
    {
      "source": "cna@python.org",
      "url": "https://github.com/python/cpython/commit/d11e69d6203080e3ec450446bfed0516727b85c3"
    },
    {
      "source": "cna@python.org",
      "url": "https://github.com/python/cpython/issues/139700"
    },
    {
      "source": "cna@python.org",
      "url": "https://github.com/python/cpython/pull/139702"
    },
    {
      "source": "cna@python.org",
      "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/QECOPWMTH4VPPJAXAH2BGTA4XADOP62G/"
    }
  ],
  "sourceIdentifier": "cna@python.org",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1285"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • 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.