#VU68494 Out-of-bounds read in nginx - CVE-2022-41741

Vulnerability identifier: #VU68494

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-41741

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
nginx
Server applications / Web servers

Vendor: NGINX

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service attack.

The vulnerability exists due to a boundary condition within the ngx_http_mp4_module module when handling MP4 files. A remote attacker can pass a specially crafted file to the server, trigger an out-of-bounds read error and read contents of memory on the system or perform a denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

nginx: 1.0.7 - 1.0.15, 1.1.3 - 1.19.10, 1.20.0 - 1.23.1

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External links
https://mailman.nginx.org/archives/list/nginx-announce@nginx.org/message/RBRRON6PYBJJM2XIAPQBFBVLR4Q6IHRA/

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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.