[SECURITY] [DLA 3203-1] nginx security update

Debian LTS Advisory DLA-3203-1 [email protected]
https://www.debian.org/lts/security/ Markus Koschany
November 23, 2022 https://wiki.debian.org/LTS

Package : nginx
Version : 1.14.2-2+deb10u5
CVE ID : CVE-2021-3618 CVE-2022-41741 CVE-2022-41742
Debian Bug : 991328

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.

CVE-2021-3618

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 10 buster, these problems have been fixed in version
1.14.2-2+deb10u5.

We recommend that you upgrade your nginx packages.

For the detailed security status of nginx please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/nginx

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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