Exploited
critical
9.8
CWE
787 120 20
Advisory Published
Updated

CVE-2019-11043: PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability

First published: Tue Oct 22 2019(Updated: )

apache_mod_php. Multiple issues were addressed by updating to PHP version 7.3.11.

Credit: security@php.net CVE-2019-11043 security@php.net security@php.net

Affected SoftwareAffected VersionHow to fix
redhat/php<0:5.3.3-50.el6_10
0:5.3.3-50.el6_10
redhat/php<0:5.4.16-46.1.el7_7
0:5.4.16-46.1.el7_7
redhat/php<0:5.4.16-46.1.el7_6
0:5.4.16-46.1.el7_6
redhat/rh-php70-php<0:7.0.27-2.el6
0:7.0.27-2.el6
redhat/rh-php72-php<0:7.2.24-1.el7
0:7.2.24-1.el7
redhat/rh-php71-php<0:7.1.30-2.el7
0:7.1.30-2.el7
redhat/rh-php70-php<0:7.0.27-2.el7
0:7.0.27-2.el7
PHP PHP>=7.1.0<7.1.33
PHP PHP>=7.2.0<7.2.24
PHP PHP>=7.3.0<7.3.11
Canonical Ubuntu Linux=12.04
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=19.04
Canonical Ubuntu Linux=19.10
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Apple macOS Catalina<10.15.3
10.15.3
Apple Mojave
Apple High Sierra
PHP PHP<7.1.33
7.1.33
redhat/php<7.3.11
7.3.11
redhat/php<7.2.24
7.2.24
redhat/php<7.1.33
7.1.33
Fedoraproject Fedora=29
Fedoraproject Fedora=30
Fedoraproject Fedora=31
Tenable Tenable.sc<5.19.0
Redhat Software Collections=1.0
Redhat Enterprise Linux=8.0
Redhat Enterprise Linux Desktop=6.0
Redhat Enterprise Linux Desktop=7.0
Redhat Enterprise Linux Eus=7.7
Redhat Enterprise Linux Eus=8.1
Redhat Enterprise Linux Eus=8.2
Redhat Enterprise Linux Eus=8.4
Redhat Enterprise Linux Eus=8.6
Redhat Enterprise Linux Eus=8.8
Redhat Enterprise Linux Eus Compute Node=7.7
Redhat Enterprise Linux For Arm 64=8.0_aarch64
Redhat Enterprise Linux For Arm 64 Eus=8.1_aarch64
Redhat Enterprise Linux For Arm 64 Eus=8.2_aarch64
Redhat Enterprise Linux For Arm 64 Eus=8.4_aarch64
Redhat Enterprise Linux For Arm 64 Eus=8.6_aarch64
Redhat Enterprise Linux For Arm 64 Eus=8.8_aarch64
Redhat Enterprise Linux For Ibm Z Systems=6.0_s390x
Redhat Enterprise Linux For Ibm Z Systems=7.0_s390x
Redhat Enterprise Linux For Ibm Z Systems=8.0_s390x
Redhat Enterprise Linux For Ibm Z Systems Eus=7.7_s390x
Redhat Enterprise Linux For Ibm Z Systems Eus=8.1_s390x
Redhat Enterprise Linux For Ibm Z Systems Eus=8.2_s390x
Redhat Enterprise Linux For Ibm Z Systems Eus=8.4_s390x
Redhat Enterprise Linux For Ibm Z Systems Eus=8.6_s390x
Redhat Enterprise Linux For Ibm Z Systems Eus=8.8_s390x
Redhat Enterprise Linux For Power Big Endian=6.0_ppc64
Redhat Enterprise Linux For Power Big Endian=7.0_ppc64
Redhat Enterprise Linux For Power Big Endian Eus=7.7_ppc64
Redhat Enterprise Linux For Power Little Endian=7.0_ppc64le
Redhat Enterprise Linux For Power Little Endian=8.0_ppc64le
Redhat Enterprise Linux For Power Little Endian Eus=7.7_ppc64le
Redhat Enterprise Linux For Power Little Endian Eus=8.1_ppc64le
Redhat Enterprise Linux For Power Little Endian Eus=8.2_ppc64le
Redhat Enterprise Linux For Power Little Endian Eus=8.4_ppc64le
Redhat Enterprise Linux For Power Little Endian Eus=8.6_ppc64le
Redhat Enterprise Linux For Power Little Endian Eus=8.8_ppc64le
Redhat Enterprise Linux For Scientific Computing=7.0
Redhat Enterprise Linux Server=6.0
Redhat Enterprise Linux Server=7.0
Redhat Enterprise Linux Server Aus=7.7
Redhat Enterprise Linux Server Aus=8.2
Redhat Enterprise Linux Server Aus=8.4
Redhat Enterprise Linux Server Aus=8.6
Redhat Enterprise Linux Server Tus=7.7
Redhat Enterprise Linux Server Tus=8.2
Redhat Enterprise Linux Server Tus=8.4
Redhat Enterprise Linux Server Tus=8.6
Redhat Enterprise Linux Server Tus=8.8
Redhat Enterprise Linux Workstation=6.0
Redhat Enterprise Linux Workstation=7.0
debian/php5
debian/php7.0
debian/php7.3
PHP FastCGI Process Manager (FPM)

Remedy

1) Check your nginx configuration files, specially the ones related to php-fpm for presence of pattern bellow on fastcgi_split_path_info regex and PATH_INFO parameter: ~~~ fastcgi_split_path_info ^(.+?\.php)(/.*)$; fastcgi_param PATH_INFO $fastcgi_path_info; ~~~ 2) If fastcgi_split_path_info regex matches with the one above, for each fastcgi_param PATH_INFO entry perform the following change: ~~~ fastcgi_param PATH_INFO $fastcgi_path_info if_not_empty; ~~~ This step will allow you to safely continue using PATH_INFO parameter while the patch is not applied. 3) Restart your nginx instance: ~~~ systemctl restart nginx ~~~

Remedy

https://bugs.php.net/bug.php?id=78599

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2019-11043?

    CVE-2019-11043 is a vulnerability 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 that allows remote code execution.

  • How severe is CVE-2019-11043?

    CVE-2019-11043 has a severity rating of 8.1 out of 10, making it critical.

  • Which software versions are affected by CVE-2019-11043?

    PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24, and 7.3.x below 7.3.11 are affected by CVE-2019-11043.

  • How can I fix CVE-2019-11043?

    To fix CVE-2019-11043, you need to update PHP to version 7.1.33, 7.2.24, or 7.3.11.

  • Where can I find more information about CVE-2019-11043?

    You can find more information about CVE-2019-11043 at the following references: [https://www.php.net/ChangeLog-7.php#7.1.33](https://www.php.net/ChangeLog-7.php#7.1.33), [https://support.apple.com/en-us/HT210919](https://support.apple.com/en-us/HT210919), [https://www.cve.org/CVERecord?id=CVE-2019-11043](https://www.cve.org/CVERecord?id=CVE-2019-11043), [https://nvd.nist.gov/vuln/detail/CVE-2019-11043](https://nvd.nist.gov/vuln/detail/CVE-2019-11043), [https://www.nginx.com/blog/php-fpm-cve-2019-11043-vulnerability-nginx/](https://www.nginx.com/blog/php-fpm-cve-2019-11043-vulnerability-nginx/).

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