CVE-2019-11043

PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

Act

*SSVC

Descriptions

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.

En PHP versiones 7.1.x anteriores a la versión 7.1.33, versiones 7.2.x anteriores a la versión 7.2.24 y versiones 7.3.x anteriores a 7.3.11, en ciertas configuraciones del FPM setup, es posible causar que el módulo FPM escriba más allá de los búferes asignados en el espacio reservado para datos de protocolo FCGI, abriendo así la posibilidad de ejecución de código remota.

USN-4166-1 fixed a vulnerability in PHP. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. It was discovered that PHP incorrectly handled certain paths when being used in FastCGI configurations. A remote attacker could possibly use this issue to execute arbitrary code. Various other issues were also addressed.

In some versions of PHP in certain configurations of FPM setup, it is possible to cause FPM module to write past allocated buffers allowing the possibility of remote code execution.

*Credits: Reported by Emil Lerner.

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Act

Exploitation

Active

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2019-04-09 CVE Reserved
2019-10-23 First Exploit
2019-10-24 CVE Published
2022-03-25 Exploited in Wild
2022-04-15 KEV Due Date
2025-02-07 CVE Updated
2025-03-20 EPSS Updated

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-787: Out-of-bounds Write

CAPEC

References (55)

URL	Tag	Source
http://packetstormsecurity.com/files/156642/PHP-FPM-7.x-Remote-Code-Execution.html	X_refsource_misc
http://seclists.org/fulldisclosure/2020/Jan/40	Mailing List
https://seclists.org/bugtraq/2020/Jan/44	Mailing List
https://security.netapp.com/advisory/ntap-20191031-0003	X_refsource_confirm
https://support.apple.com/kb/HT210919	X_refsource_confirm
https://support.f5.com/csp/article/K75408500?utm_source=f5support&amp%3Butm_medium=RSS	X_refsource_confirm
https://www.synology.com/security/advisory/Synology_SA_19_36	X_refsource_confirm
https://www.tenable.com/security/tns-2021-14	X_refsource_confirm
https://blog.orange.tw/2019/10/an-analysis-and-thought-about-recently.html

URL	Date	SRC
https://packetstorm.news/files/id/154974	2019-10-24
https://packetstorm.news/files/id/156642	2020-03-05
https://www.exploit-db.com/exploits/48182	2020-03-09
https://www.exploit-db.com/exploits/47553	2019-10-28
https://github.com/theMiddleBlue/CVE-2019-11043	2019-10-29
https://github.com/jas502n/CVE-2019-11043	2020-08-20
https://github.com/k8gege/CVE-2019-11043	2019-11-11
https://github.com/akamajoris/CVE-2019-11043-Docker	2019-10-28
https://github.com/0th3rs-Security-Team/CVE-2019-11043	2019-11-06
https://github.com/kriskhub/CVE-2019-11043	2020-05-25
https://github.com/AleWong/PHP-FPM-Remote-Code-Execution-Vulnerability-CVE-2019-11043-	2020-07-06
https://github.com/ypereirareis/docker-CVE-2019-11043	2019-10-28
https://github.com/lindemer/CVE-2019-11043	2020-11-20
https://github.com/MRdoulestar/CVE-2019-11043	2019-11-06
https://github.com/ianxtianxt/CVE-2019-11043	2019-10-24
https://github.com/huowen/CVE-2019-11043	2019-10-30
https://github.com/B1gd0g/CVE-2019-11043	2019-10-23
https://github.com/jas9reet/CVE-2019-11043	2022-03-06
https://github.com/tinker-li/CVE-2019-11043	2019-10-23
https://github.com/fairyming/CVE-2019-11043	2019-10-24
https://github.com/corifeo/CVE-2019-11043	2020-07-13
https://github.com/neex/phuip-fpizdam	2025-02-07
https://github.com/shadow-horse/cve-2019-11043	2024-08-12
https://github.com/moniik/CVE-2019-11043_env	2024-08-12
https://github.com/alokaranasinghe/cve-2019-11043	2024-08-12
https://github.com/jptr218/php_hack	2021-09-18
https://bugs.php.net/bug.php?id=78599	2025-02-07

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00011.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00014.html	2023-11-07
https://access.redhat.com/errata/RHSA-2019:3286	2023-11-07
https://access.redhat.com/errata/RHSA-2019:3287	2023-11-07
https://access.redhat.com/errata/RHSA-2019:3299	2023-11-07
https://access.redhat.com/errata/RHSA-2019:3300	2023-11-07
https://access.redhat.com/errata/RHSA-2019:3724	2023-11-07
https://access.redhat.com/errata/RHSA-2019:3735	2023-11-07
https://access.redhat.com/errata/RHSA-2019:3736	2023-11-07
https://access.redhat.com/errata/RHSA-2020:0322	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W23TP6X4H7LB645FYZLUPNIRD5W3EPU	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FSNBUSPKMLUHHOADROKNG5GDWDCRHT5M	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T62LF4ZWVV7OMMIZFO6IFO5QLZKK7YRD	2023-11-07
https://usn.ubuntu.com/4166-1	2023-11-07
https://usn.ubuntu.com/4166-2	2023-11-07
https://www.debian.org/security/2019/dsa-4552	2023-11-07
https://www.debian.org/security/2019/dsa-4553	2023-11-07
https://access.redhat.com/security/cve/CVE-2019-11043	2020-07-07
https://bugzilla.redhat.com/show_bug.cgi?id=1766378	2020-07-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.1.0 < 7.1.33 Search vendor "Php" for product "Php" and version " >= 7.1.0 < 7.1.33"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.2.0 < 7.2.24 Search vendor "Php" for product "Php" and version " >= 7.2.0 < 7.2.24"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.3.0 < 7.3.11 Search vendor "Php" for product "Php" and version " >= 7.3.0 < 7.3.11"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				19.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				19.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.10"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected