A modsecurity-apache security update has been released for Debian GNU/Linux 10 LTS to address multiple issues that allow remote attackers to bypass the application firewall and have other unspecified impacts.

DLA 3283-1: modsecurity-apache security update

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Debian LTS Advisory DLA-3283-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Tobias Frost
January 26, 2023   https://wiki.debian.org/LTS
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Package : modsecurity-apache
Version : 2.9.3-1+deb10u2
CVE ID : CVE-2022-48279 CVE-2023-24021
Debian Bug : 1029329

Multiple issues were found in modsecurity-apache, open source, cross
platform web application firewall (WAF) engine for Apache which allows
remote attackers to bypass the applications firewall and other
unspecified impact.

CVE-2022-48279

In ModSecurity before 2.9.6 and 3.x before 3.0.8, HTTP multipart
requests were incorrectly parsed and could bypass the Web Application
Firewall.
NOTE: this is related to CVE-2022-39956 but can be considered
independent changes to the ModSecurity(C language) codebase.

CVE-2023-24021

Incorrect handling of null-bytes in file uploads in ModSecurity
before 2.9.7 may allow for Web Application Firewall bypasses and
buffer iverflows on the Web Application Firewall when executing
rules reading the FILES_TMP_CONTENT collection.

For Debian 10 buster, these problems have been fixed in version
2.9.3-1+deb10u2.

We recommend that you upgrade your modsecurity-apache packages.

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

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