KLA12400 Multiple vulnerabilities in Apache HTTP Server

Multiple vulnerabilities were found in Apache HTTP Server. Malicious users can exploit these vulnerabilities to cause denial of service, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. NULL pointer dereference or server side request forgery (SSRF) vulnerability can be exploited remotely via special crafted URL to cause denial of service or bypass security restrictions.
2. Buffer overflow vulnerability in mod_lua can be exploited remotely via special crafted webpage to cause denial of service.

Original advisories

Fixed in Apache HTTP Server 2.4.52

Exploitation

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Related products

Apache-HTTP-Server

CVE list

CVE-2021-44224 critical

CVE-2021-44790 critical

Solution

Update to the latest version

Download Apache HTTP Server

Impacts

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

Affected Products

• Apache HTTP Server 2.4.x earlier than 2.4.52