CVE-2019-11043 (GCVE-0-2019-11043)

Vulnerability from cvelistv5 – Published: 2019-10-28 14:19 – Updated: 2025-10-21 23:45
VLAI?
Title
Underflow in PHP-FPM can lead to RCE
Summary
In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus opening the possibility of remote code execution.
Severity ?
8.7 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
CWE
Assigner
php
References
https://github.com/neex/phuip-fpizdam x_refsource_MISC
https://bugs.php.net/bug.php?id=78599 x_refsource_CONFIRM
https://usn.ubuntu.com/4166-1/ vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2019/dsa-4552 vendor-advisoryx_refsource_DEBIAN
https://www.debian.org/security/2019/dsa-4553 vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/4166-2/ vendor-advisoryx_refsource_UBUNTU
https://support.f5.com/csp/article/K75408500?utm_… x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://security.netapp.com/advisory/ntap-2019103… x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2019:3286 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3287 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3299 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3300 vendor-advisoryx_refsource_REDHAT
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://access.redhat.com/errata/RHSA-2019:3724 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3735 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3736 vendor-advisoryx_refsource_REDHAT
https://www.synology.com/security/advisory/Synolo… x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://support.apple.com/kb/HT210919 x_refsource_CONFIRM
https://seclists.org/bugtraq/2020/Jan/44 mailing-listx_refsource_BUGTRAQ
http://seclists.org/fulldisclosure/2020/Jan/40 mailing-listx_refsource_FULLDISC
https://access.redhat.com/errata/RHSA-2020:0322 vendor-advisoryx_refsource_REDHAT
http://packetstormsecurity.com/files/156642/PHP-F… x_refsource_MISC
https://www.tenable.com/security/tns-2021-14 x_refsource_CONFIRM
Impacted products
Vendor Product Version
PHP PHP Affected: 7.1.x , < 7.1.33 (custom)
Affected: 7.2.x , < 7.2.24 (custom)
Affected: 7.3.x , < 7.3.11 (custom)
Create a notification for this product.
Credits
Reported by Emil Lerner.
Show details on NVD website
To clipboard 

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\"name\": \"FEDORA-2019-187ae3128d\", \"refsource\": \"FEDORA\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FSNBUSPKMLUHHOADROKNG5GDWDCRHT5M/\", \"name\": \"FEDORA-2019-7bb07c3b02\", \"refsource\": \"FEDORA\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00011.html\", \"name\": \"openSUSE-SU-2019:2441\", \"refsource\": \"SUSE\"}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3724\", \"name\": \"RHSA-2019:3724\", \"refsource\": \"REDHAT\"}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3735\", \"name\": \"RHSA-2019:3735\", \"refsource\": \"REDHAT\"}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3736\", \"name\": \"RHSA-2019:3736\", \"refsource\": \"REDHAT\"}, {\"url\": \"https://www.synology.com/security/advisory/Synology_SA_19_36\", \"name\": \"https://www.synology.com/security/advisory/Synology_SA_19_36\", \"refsource\": \"CONFIRM\"}, {\"url\": 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\"http://packetstormsecurity.com/files/156642/PHP-FPM-7.x-Remote-Code-Execution.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://www.tenable.com/security/tns-2021-14\", \"name\": \"https://www.tenable.com/security/tns-2021-14\", \"refsource\": \"CONFIRM\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus opening the possibility of remote code execution.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"CWE-120 Buffer Overflow\"}]}]}, \"work_around\": [{\"lang\": \"en\", \"value\": \"Configuring nginx (or other server that implements the front-end part of the FPM protocol) to check for the existence of the target file before passing it to PHP FPM (e.g. \\\"try_files $uri =404\\\" or \\\"if (-f $uri)\\\" in nginx) for would prevent this vulnerability from happening.\"}], \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2019-11043\", \"STATE\": \"PUBLIC\", \"TITLE\": \"Underflow in PHP-FPM can lead to RCE\", \"ASSIGNER\": \"security@php.net\", \"DATE_PUBLIC\": \"2019-10-22T03:18:00.000Z\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2019-11043\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-21T23:45:28.408Z\", \"dateReserved\": \"2019-04-09T00:00:00.000Z\", \"assignerOrgId\": \"dd77f84a-d19a-4638-8c3d-a322d820ed2b\", \"datePublished\": \"2019-10-28T14:19:04.252Z\", \"assignerShortName\": \"php\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Taxonomy of the tags.




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.