CVE-2019-11043

Description

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.

CVSS breakdown

Affected products

• php / php7.1.x – 7.1.33
• php / php7.2.x – 7.2.24
• php / php7.3.x – 7.3.11

Exploits & proofs of concept

• exploit-dbPHP-FPM - Underflow Remote Code Execution (Metasploit)by Metasploit
• exploit-dbPHP-FPM + Nginx - Remote Code Executionby Emil Lerner
• nucleiPHP-FPM Path Info Buffer Underflow - Remote Code Executionby Prasath from Securin Labs (https://securin.io)

References

• MISChttps://github.com/neex/phuip-fpizdam
• MISChttps://bugs.php.net/bug.php?id=78599
• VENDOR_ADVISORYhttps://usn.ubuntu.com/4166-1/
• VENDOR_ADVISORYhttps://www.debian.org/security/2019/dsa-4552
• VENDOR_ADVISORYhttps://www.debian.org/security/2019/dsa-4553
• VENDOR_ADVISORYhttps://usn.ubuntu.com/4166-2/
• MISChttps://support.f5.com/csp/article/K75408500?utm_source=f5support&amp%3Butm_medium=RSS
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T62LF4ZWVV7OMMIZFO6IFO5QLZKK7YRD/
• MISChttps://security.netapp.com/advisory/ntap-20191031-0003/
• VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:3286
• VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:3287
• VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:3299
• VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:3300
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W23TP6X4H7LB645FYZLUPNIRD5W3EPU/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FSNBUSPKMLUHHOADROKNG5GDWDCRHT5M/
• MAILING_LISThttp://lists.opensuse.org/opensuse-security-announce/2019-11/msg00011.html
• VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:3724
• VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:3735
• VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:3736
• MISChttps://www.synology.com/security/advisory/Synology_SA_19_36
• MAILING_LISThttp://lists.opensuse.org/opensuse-security-announce/2019-11/msg00014.html
• VENDOR_ADVISORYhttps://support.apple.com/kb/HT210919
• MAILING_LISThttps://seclists.org/bugtraq/2020/Jan/44
• MAILING_LISThttp://seclists.org/fulldisclosure/2020/Jan/40
• VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2020:0322
• EXPLOIThttp://packetstormsecurity.com/files/156642/PHP-FPM-7.x-Remote-Code-Execution.html
• MISChttps://www.tenable.com/security/tns-2021-14