Debian Security Advisory

DLA-3317-1 snort -- LTS security update

Date Reported:
11 Feb 2023
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 1021276.
In Mitre's CVE dictionary: 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.
More information:

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 Debian 10 buster, these problems have been fixed in version 2.9.20-0+deb10u1.

We recommend that you upgrade your snort packages.

For the detailed security status of snort please refer to its security tracker page at:

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: