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