CVE-2020-7062 (GCVE-0-2020-7062)

Vulnerability from cvelistv5 – Published: 2020-02-27 20:25 – Updated: 2024-09-16 22:24
VLAI
Title
Null Pointer Dereference in PHP Session Upload Progress
Summary
In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when using file upload functionality, if upload progress tracking is enabled, but session.upload_progress.cleanup is set to 0 (disabled), and the file upload fails, the upload procedure would try to clean up data that does not exist and encounter null pointer dereference, which would likely lead to a crash.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
php CNA under the mitre root
CNA scorecard B 81/100 over 27 records in the last 180 days details
References
URL Tags
https://bugs.php.net/bug.php?id=79221 x_refsource_MISC
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://security.gentoo.org/glsa/202003-57 vendor-advisoryx_refsource_GENTOO
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4330-1/ vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2020/dsa-4717 vendor-advisoryx_refsource_DEBIAN
https://www.debian.org/security/2020/dsa-4719 vendor-advisoryx_refsource_DEBIAN
https://www.tenable.com/security/tns-2021-14 x_refsource_CONFIRM
Impacted products
Vendor Product Version CPE status
PHP Group PHP Affected: 7.3.x , < 7.3.15 (custom)
Affected: 7.4.x , < 7.4.3 (custom)
Affected: 7.2.x , < 7.2.28 (custom)
guessed Create a notification for this product.
Date Public
2020-02-17 00:00
Credits
Reported by ryat@php.net
Show details on NVD website
To clipboard 

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            "value": "In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when using file upload functionality, if upload progress tracking is enabled, but session.upload_progress.cleanup is set to 0 (disabled), and the file upload fails, the upload procedure would try to clean up data that does not exist and encounter null pointer dereference, which would likely lead to a crash."
          },
          {
            "lang": "es",
            "value": "En PHP versiones 7.2.x por debajo de 7.2.28, versiones 7.3.x por debajo de 7.3.15 y versiones 7.4.x por debajo de 7.4.3, cuando es usada la funcionalidad de carga de archivos, si el seguimiento de progreso de carga est\u00e1 habilitado, pero session.upload_progress.cleanup est\u00e1 ajustado en 0 (deshabilitado), y la carga del archivo presenta un fallo, el procedimiento de carga intentar\u00eda limpiar los datos que no existan y encontrar\u00eda una desreferencia del puntero null, lo que probablemente conllevar\u00eda a un bloqueo."
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        "id": "CVE-2020-7062",
        "lastModified": "2024-11-21T05:36:35.703",
        "metrics": {
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              "baseSeverity": "MEDIUM",
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                "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
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              "exploitabilityScore": 8.6,
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      "cve": "CVE-2020-7062",
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      "initial_release_date": "2020-02-04T00:00:00+00:00",
      "product_status:fixed": "605",
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      "source": "Red Hat CSAF VEX",
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      "product_status:known_affected": "1236",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2020-7062",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2023/cve-2020-7062.json",
      "version": "22"
    }
  }
}



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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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

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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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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