ELA-739-1 nginx security update

denial of service

Version1.6.2-5+deb8u10 (jessie), 1.10.3-1+deb9u8 (stretch)
Related CVEs CVE-2021-3618 CVE-2022-41741 CVE-2022-41742

It was discovered that parsing errors in the mp4 module of Nginx, a high-performance web and reverse proxy server, could result in denial of service, memory disclosure or potentially the execution of arbitrary code when processing a malformed mp4 file.

This module is only enabled in the nginx-extras binary package.

In addition the following vulnerability has been fixed.


ALPACA is an application layer protocol content confusion attack,
exploiting TLS servers implementing different protocols but using
compatible certificates, such as multi-domain or wildcard certificates.
A MiTM attacker having access to victim's traffic at the TCP/IP layer can
redirect traffic from one subdomain to another, resulting in a valid TLS
session. This breaks the authentication of TLS and cross-protocol attacks
may be possible where the behavior of one protocol service may compromise

For Debian 8 jessie, these problems have been fixed in version 1.6.2-5+deb8u10.

For Debian 9 stretch, these problems have been fixed in version 1.10.3-1+deb9u8.

We recommend that you upgrade your nginx packages.

Further information about Extended LTS security advisories can be found at: debian Extended Long term support