NULL pointer dereference in Apache HTTP Server - CVE-2017-3169

Vulnerability identifier: #VU7116

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-3169

CWE-ID: CWE-592

Exploitation vector: Remote access

Exploit availability: Public exploit is available

The vulnerability allows a remote attacker to perform denial of service attack.

The vulnerability exists due to a NULL pointer dereference error within mod_ssl module, when third-party modules call ap_hook_process_connection() function during an HTTP request to an HTTPS port. A remote attacker can send a specially crafted HTTP request and crash the affected web server.

Apache HTTP Server
Arch Linux
Amazon Linux AMI
Gentoo Linux
Debian Linux
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux Server - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Ubuntu
Slackware Linux
Fedora
JBoss Core Services
Tenable.sc
apache2 (Alpine package)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
httpd (Red Hat package)
httpd
firefox (Red Hat package)
Dell Secure Connect Gateway
IBM Cloud Pak for Business Automation
XtremIO XMS

Update Apache HTTP server to version 2.2.34 or 2.4.26.

Tenable.sc - update to 5.13.0
apache2 (Alpine package) - update to 2.4.26-r0
Dell Secure Connect Gateway - update to 5.12.00.10
httpd (Red Hat package) - update to 2.4.6-40.el7_2.6
httpd - addressed in versions 2.4.26-1.fc24, 2.4.26-1.fc25, 2.4.26-1.fc26, 2.4.27-1.fc25, 2.4.27-2.fc25
XtremIO XMS - update to 6.3.1
IBM Cloud Pak for Business Automation - addressed in versions 21.0.3-IF037, 24.0.0-IF003
firefox (Red Hat package) - update to 115.13.0-3.el8_4

• Exploit #2288 - Exploits (Containing Self Made Perl Reproducers / PoC Codes) (April 7, 2020)
• Exploit #2002 - Alien-Framework (Alien-Framework, it is a framework with many CVE exploits and tools to use in pen-testing.) (March 18, 2020)

• https://httpd.apache.org/security/vulnerabilities_22.html

• Multiple vulnerabilities in Apache HTTP server
• Ubuntu update for Apache HTTP Server
• Arch Linux update for apache
• Slackware Linux update for httpd
• Red Hat update for Apache HTTP server
• Red Hat update for Apache HTTP server
• Red Hat update for Apache HTTP server
• Ubuntu update for Apache HTTP Server
• Debian update for apache2
• Gentoo update for Apache
• Amazon Linux AMI update for httpd
• Amazon Linux AMI update for httpd24
• Red Hat update for Apache
• Red Hat update for Apache
• Red Hat update for Apache
• Red Hat update for httpd
• Red Hat update for httpd
• Multiple vulnerabilities in Tenable.sc
• NULL pointer dereference in apache2 (Alpine package)
• Multiple vulnerabilities in DELL Secure Connect Gateway Security
• Multiple vulnerabilities in Dell EMC XtremIO
• Red Hat Enterprise Linux 8 update for firefox
• Fedora 25 update for httpd
• Fedora 26 update for httpd
• Fedora 24 update for httpd
• Fedora 25 update for httpd
• Fedora 25 update for httpd
• Red Hat Enterprise Linux 7 update for httpd
• Multiple vulnerabilities in IBM Cloud Pak for Business Automation