Vulnerability identifier: #VU11281

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-2018-1301

CWE-ID: CWE-125

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 due to improper validation of user-supplied input. A remote attacker can send a specially crafted HTTP request to trigger an out-of-bounds memory access error after a header size limit has been reached to cause the target service to crash.

Mitigation
Update to version 2.4.32.

Vulnerable software versions

Apache HTTP Server: 2.4.1 - 2.4.29

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External links
http://httpd.apache.org/security/vulnerabilities_24.html#CVE-2018-1301

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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.