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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


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

Related products

CVE list

  • CVE-2021-44224
  • CVE-2021-44790

Read more

Find out the statistics of the vulnerabilities spreading in your region on statistics.securelist.com

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