CVE-2018-16845: Apple Xcode

Medium severity, CVSS 6.1. EPSS: 9.8% chance of exploitation in the next 30 days.

nginx before versions 1.15.6, 1.14.1 has a vulnerability in the ngx_http_mp4_module, which might allow an attacker to cause infinite loop in a worker process, cause a worker process crash, or might result in worker process memory disclosure by using a specially crafted mp4 file. The issue only affects nginx if it is built with the ngx_http_mp4_module (the module is not built by default) and the .mp4. directive is used in the configuration file. Further, the attack is only possible if an attacker is able to trigger processing of a specially crafted mp4 file with the ngx_http_mp4_module.

Affected products

• Apple Xcode: before 13.0 (fixed in 13.0)
• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• F5 Nginx: from 1.0.7, up to and including 1.0.15; from 1.1.3, up to and including 1.15.5
• Opensuse Leap: version 15.1 only

Published 2018-11-07. Last modified 2026-06-17.