A snort security update has been released for Debian GNU/Linux 11 to address multiple security vulnerabilities.

DSA 5354-1: snort security update

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Debian Security Advisory DSA-5354-1 security@debian.org
  https://www.debian.org/security/ Markus Koschany
February 18, 2023   https://www.debian.org/security/faq
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Package : snort
CVE ID : CVE-2020-3299 CVE-2020-3315 CVE-2021-1223 CVE-2021-1224
CVE-2021-1236 CVE-2021-1494 CVE-2021-1495 CVE-2021-34749
CVE-2021-40114
Debian Bug : 1021276

Multiple security vulnerabilities were discovered in snort, a flexible Network
Intrusion Detection System, which could allow an unauthenticated, remote
attacker to cause a denial of service (DoS) condition or bypass filtering
technology on an affected device and ex-filtrate data from a compromised host.

For the stable distribution (bullseye), these problems have been fixed in
version 2.9.20-0+deb11u1.

We recommend that you upgrade your snort packages.

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

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