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CVE-2019-9948 (GCVE-0-2019-9948)

Vulnerability from cvelistv5 – Published: 2019-03-23 17:07 – Updated: 2024-08-04 22:10
VLAI
Summary
urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechanisms that blacklist file: URIs, as demonstrated by triggering a urllib.urlopen('local_file:///etc/passwd') call.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • n/a
Assigner
References
URL Tags
https://bugs.python.org/issue35907 x_refsource_MISC
https://github.com/python/cpython/pull/11842 x_refsource_MISC
http://www.securityfocus.com/bid/107549 vdb-entryx_refsource_BID
https://security.netapp.com/advisory/ntap-2019040… x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2019:1700 vendor-advisoryx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://access.redhat.com/errata/RHSA-2019:2030 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/4127-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4127-1/ vendor-advisoryx_refsource_UBUNTU
https://seclists.org/bugtraq/2019/Oct/29 mailing-listx_refsource_BUGTRAQ
http://packetstormsecurity.com/files/154927/Slack… x_refsource_MISC
https://access.redhat.com/errata/RHSA-2019:3335 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3520 vendor-advisoryx_refsource_REDHAT
https://security.gentoo.org/glsa/202003-26 vendor-advisoryx_refsource_GENTOO
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r1b103833cb5… mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
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          "lang": "en",
          "value": "urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechanisms that blacklist file: URIs, as demonstrated by triggering a urllib.urlopen(\u0027local_file:///etc/passwd\u0027) call."
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          "value": "urllib en Python, en versiones 2.x hasta la 2.7.16, soporta el esquema local_file:, lo que facilita que los atacantes remotos omitan los mecanismos de protecci\u00f3n que ponen en lista negra los URI file:, tal y como queda demostrado con una llamada urllib.urlopen(\u0027local_file:///etc/passwd\u0027)."
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            "lang": "en",
            "value": "urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechanisms that blacklist file: URIs, as demonstrated by triggering a urllib.urlopen(\u0027local_file:///etc/passwd\u0027) call."
          },
          {
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            "value": "urllib en Python, en versiones 2.x hasta la 2.7.16, soporta el esquema local_file:, lo que facilita que los atacantes remotos omitan los mecanismos de protecci\u00f3n que ponen en lista negra los URI file:, tal y como queda demostrado con una llamada urllib.urlopen(\u0027local_file:///etc/passwd\u0027)."
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        "id": "CVE-2019-9948",
        "lastModified": "2024-11-21T04:52:39.273",
        "metrics": {
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              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
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                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 6.4,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
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                "version": "2.0"
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              "exploitabilityScore": 10.0,
              "impactScore": 4.9,
              "obtainAllPrivilege": false,
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              "source": "nvd@nist.gov",
              "type": "Primary",
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          "cvssMetricV31": [
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              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 9.1,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 5.2,
              "source": "nvd@nist.gov",
              "type": "Primary"
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          ]
        },
        "published": "2019-03-23T18:29:02.090",
        "references": [
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        "sourceIdentifier": "cve@mitre.org",
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                "value": "CWE-22"
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    "redhat_vex": {
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      "current_release_date": "2026-06-28T07:30:36+00:00",
      "cve": "CVE-2019-9948",
      "id": "CVE-2019-9948",
      "initial_release_date": "2019-03-23T00:00:00+00:00",
      "product_status:fixed": "874",
      "product_status:known_affected": "16",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "python: Undocumented local_file protocol allows remote attackers to bypass protection mechanisms",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-9948.json",
      "version": "3"
    },
    "suse_vex": {
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      "current_release_date": "2026-09-16T00:32:15Z",
      "cve": "CVE-2019-9948",
      "id": "CVE-2019-9948",
      "initial_release_date": "2023-02-15T04:13:53Z",
      "product_status:known_affected": "462",
      "product_status:known_not_affected": "297",
      "product_status:recommended": "834",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2019-9948",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-9948.json",
      "version": "43"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
  • 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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.