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Debian dla-4228 : libnginx-mod-http-auth-pam - security update

medium Nessus Plugin ID 240484

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4228 advisory.

 - ------------------------------------------------------------------------- Debian LTS Advisory DLA-4228-1 [email protected] https://www.debian.org/lts/security/ Sylvain Beucler June 24, 2025 https://wiki.debian.org/LTS
 - -------------------------------------------------------------------------

 Package : nginx Version : 1.18.0-6.1+deb11u5 CVE ID : CVE-2020-36309 CVE-2024-33452 Debian Bug : 986787

 Two vulnerabilities were discovered in Nginx, a high-performance web and reverse proxy server, more precisely in ngx_http_lua_module, which embeds the Lua scripting language into Nginx. This could lead to request smuggling or contribute to cache poisoning and authentication bypass.

 ngx_http_lua_module is provided by the optional libnginx-mod-http-lua binary package.

 CVE-2020-36309

 ngx_http_lua_module allows unsafe characters in an argument when using the API to mutate a URI, or a request or response header.

 CVE-2024-33452

 lua-nginx-module allows a remote attacker to conduct HTTP request smuggling via a crafted HEAD request.

 For Debian 11 bullseye, these problems have been fixed in version 1.18.0-6.1+deb11u5.

 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

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the libnginx-mod-http-auth-pam packages.

See Also

https://security-tracker.debian.org/tracker/source-package/nginx

https://security-tracker.debian.org/tracker/CVE-2020-36309

https://security-tracker.debian.org/tracker/CVE-2024-33452

https://packages.debian.org/source/bullseye/nginx

Plugin Details

Severity: Medium

ID: 240484

File Name: debian_DLA-4228.nasl

Version: 1.1

Type: local

Agent: unix

Published: 6/25/2025

Updated: 6/25/2025

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2020-36309

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libnginx-mod-http-xslt-filter, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:libnginx-mod-http-upstream-fair, p-cpe:/a:debian:debian_linux:nginx-light, p-cpe:/a:debian:debian_linux:libnginx-mod-http-auth-pam, p-cpe:/a:debian:debian_linux:libnginx-mod-http-ndk, p-cpe:/a:debian:debian_linux:nginx-doc, p-cpe:/a:debian:debian_linux:nginx-extras, p-cpe:/a:debian:debian_linux:libnginx-mod-http-subs-filter, p-cpe:/a:debian:debian_linux:libnginx-mod-http-uploadprogress, p-cpe:/a:debian:debian_linux:libnginx-mod-http-perl, p-cpe:/a:debian:debian_linux:libnginx-mod-stream-geoip2, p-cpe:/a:debian:debian_linux:libnginx-mod-http-fancyindex, p-cpe:/a:debian:debian_linux:libnginx-mod-http-lua, p-cpe:/a:debian:debian_linux:libnginx-mod-mail, p-cpe:/a:debian:debian_linux:libnginx-mod-stream, p-cpe:/a:debian:debian_linux:nginx-core, p-cpe:/a:debian:debian_linux:nginx-full, p-cpe:/a:debian:debian_linux:libnginx-mod-stream-geoip, p-cpe:/a:debian:debian_linux:libnginx-mod-http-cache-purge, p-cpe:/a:debian:debian_linux:libnginx-mod-http-echo, p-cpe:/a:debian:debian_linux:libnginx-mod-http-headers-more-filter, p-cpe:/a:debian:debian_linux:libnginx-mod-nchan, p-cpe:/a:debian:debian_linux:nginx-common, p-cpe:/a:debian:debian_linux:libnginx-mod-http-image-filter, p-cpe:/a:debian:debian_linux:libnginx-mod-http-geoip, p-cpe:/a:debian:debian_linux:libnginx-mod-http-geoip2, p-cpe:/a:debian:debian_linux:nginx, p-cpe:/a:debian:debian_linux:libnginx-mod-http-dav-ext, p-cpe:/a:debian:debian_linux:libnginx-mod-rtmp

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/24/2025

Vulnerability Publication Date: 4/6/2021

Reference Information

CVE: CVE-2020-36309, CVE-2024-33452