#VU7118 NULL pointer dereference in Apache HTTP Server - CVE-2017-7659

Vulnerability identifier: #VU7118

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-7659

CWE-ID: CWE-476

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 perform denial of service attack.

The vulnerability exists due to a NULL pointer dereference error within mod_http2. A remote attacker can send a specially crafted HTTP/2 request and crash the affected process.

Successful exploitation of the vulnerability result in denial of service (DoS) attack.

Mitigation
Update to version 2.4.26.

Vulnerable software versions

Apache HTTP Server: 2.4.24 - 2.4.25

---

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

---

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.