Vulnerability identifier: #VU17179

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-0190

CWE-ID: CWE-835

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache HTTP Server
Server applications / Web servers

Vendor: Apache Foundation

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

The weakness exists in the mod_ssl module due to improper handling of renegotiation attempts when OpenSSL 1.1.1 or later is used. A remote attacker can send a specially crafted request that submits malicious input, trigger mod_ssl loop and cause the service to crash.

Mitigation
Update to version 2.4.38.

Vulnerable software versions

Apache HTTP Server: 2.4.37

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External links
http://httpd.apache.org/security/vulnerabilities_24.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.