#VU96020 Out-of-bounds read in nginx and NGINX Plus - CVE-2024-7347

Vulnerability identifier: #VU96020

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-7347

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
nginx
Server applications / Web servers
NGINX Plus
Server applications / Web servers

Vendor: NGINX
F5 Networks

Description

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

The vulnerability exists due to a boundary condition within the ngx_http_mp4_module when reading mp4 files. A remote attacker can pass a specially crafted file to the web server, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

Successful exploitation of the vulnerability requires that the server is built with the ngx_http_mp4_module and the "mp4" directive is used in the configuration file.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

nginx: 1.5.13, 1.6.0 - 1.6.3, 1.7.0 - 1.7.12, 1.8.0 - 1.8.1, 1.9.0 - 1.9.15, 1.10.0 - 1.19.10, 1.20.0 - 1.27.0

NGINX Plus: R30 P1 - R30, R31 P1 - R31, R32

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External links
https://my.f5.com/manage/s/article/K000140529
https://nginx.org/download/patch.2024.mp4.txt
https://mailman.nginx.org/pipermail/nginx-announce/2024/UUOCLLONPR6244YQYU65PO5LB7JDYCWM.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.