#VU18108 Resource management error in Apache HTTP Server

Published: 2019-04-02 | Updated: 2019-06-13

Vulnerability identifier: #VU18108

Vulnerability risk: Medium


CVE-ID: CVE-2019-0197


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache HTTP Server
Server applications / Web servers

Vendor: Apache Foundation


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

The vulnerability exists due to an error within the mod_http2 module when processing update requests from http/1.1 to http/2, if this was not the first request on a connection. A remote attacker can send specially crafted requests to the affected server and perform denial of service attack.

Successful exploitation of the vulnerability requires that HTTP/2 protocol is enabled for a "http:" host or H2Upgrade is enabled for h2 on a "https:" host.

Install updates from vendor's website.

Vulnerable software versions

Apache HTTP Server: 2.4.34 - 2.4.38


External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

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