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Debian 11: DLA-4228-1 urgent update for nginx request smuggling fix

debian lts
Calendar Grey June 24, 2025
Dist Debian Esm H88
Recent findings reveal that two security weaknesses in Nginx may facilitate request smuggling and authentication bypass on Debian systems. Updating is advised.
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 N...
Topics%20covered

Topics Covered

security advisory critical debian authentication bypass nginx request smuggling

Summary

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/source-package/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


Severity
important
Lowest
Low
Medium
High
Critical

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

Topics%20covered

Topics Covered

security advisory critical debian authentication bypass nginx request smuggling

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