Null pointer dereference in Apache HTTP Server - CVE-2018-1302

Vulnerability identifier: #VU11287

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-2018-1302

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to improper destruction of an HTTP/2 stream after being handled. A remote attacker can send a specially crafted HTTP/2 stream, write a NULL pointer value to an already freed memory space and cause the service to crash.

Apache HTTP Server
Amazon Linux AMI
Arch Linux
Ubuntu
Fedora
Tenable.sc
Dell Secure Connect Gateway
apache2 (Alpine package)
apache2-bin (Ubuntu package)
mod_http2

Update to version 2.4.32.

Apache HTTP Server - update to 2.4.32
Tenable.sc - update to 5.13.0
Dell Secure Connect Gateway - update to 5.12.00.10
apache2 (Alpine package) - update to 2.4.33-r0
apache2-bin (Ubuntu package) - update to 2.4.29-1ubuntu4.4
mod_http2 - addressed in versions 1.10.16-1.fc26, 1.10.16-1.fc27, 1.10.16-1.fc28, 1.10.18-1.fc26

• http://httpd.apache.org/security/vulnerabilities_24.html#CVE-2018-1302

• Multiple vulnerabilities in Apache HTTP Server
• Arch Linux update for apache
• Amazon Linux AMI update for httpd24
• Multiple vulnerabilities in Tenable.sc
• Null pointer dereference in apache2 (Alpine package)
• Multiple vulnerabilities in DELL Secure Connect Gateway Security
• Fedora 28 update for mod_http2
• Fedora 26 update for mod_http2
• Fedora 27 update for mod_http2
• Fedora 26 update for mod_http2
• Ubuntu update for apache2