Debian takes security very seriously. We handle all security problems brought to our attention and ensure that they are corrected within a reasonable timeframe. Many advisories are coordinated with other free software vendors and are published the same day a vulnerability is made public and we also have a Security Audit team that reviews the archive looking for new or unfixed security bugs.
Experience has shown that
security through obscurity does not work. Public
disclosure allows for more rapid and better solutions to security problems. In
that vein, this page addresses Debian's status with respect to various known
security holes, which could potentially affect Debian.
Debian also participates in security standardization efforts: the Debian Security Advisories are CVE-Compatible (review the cross references) and Debian is represented in the Board of the Open Vulnerability Assessment Language project.
In order to receive the latest Debian security advisories, subscribe to the debian-security-announce mailing list.
You can use apt to easily get the latest security updates. This requires a line such as
deb http://security.debian.org/debian-security stretch/updates main contrib non-free
/etc/apt/sources.list file. Then execute
apt-get update && apt-get upgrade to download and apply
the pending updates.
The security archive is signed with the normal Debian archive
These web pages include a condensed archive of security advisories posted to the debian-security-announce list.
[17 Dec 2017] DSA-4068 rsync security update
[17 Dec 2017] DSA-4067 openafs security update
[17 Dec 2017] DSA-4066 otrs2 security update
[17 Dec 2017] DSA-4065 openssl1.0 security update
[12 Dec 2017] DSA-4064 chromium-browser security update
[11 Dec 2017] DSA-4063 pdns-recursor security update
[10 Dec 2017] DSA-4062 firefox-esr security update
[10 Dec 2017] DSA-4061 thunderbird security update
[09 Dec 2017] DSA-4060 wireshark security update
[08 Dec 2017] DSA-4059 libxcursor security update
[08 Dec 2017] DSA-4058 optipng security update
[08 Dec 2017] DSA-4057 erlang security update
[07 Dec 2017] DSA-4056 nova security update
[07 Dec 2017] DSA-4055 heimdal security update
[03 Dec 2017] DSA-4054 tor security update
[30 Nov 2017] DSA-4053 exim4 security update
[29 Nov 2017] DSA-4052 bzr security update
[29 Nov 2017] DSA-4051 curl security update
[28 Nov 2017] DSA-4050 xen security update
[27 Nov 2017] DSA-4049 ffmpeg security update
[23 Nov 2017] DSA-4048 openjdk-7 security update
[23 Nov 2017] DSA-4047 otrs2 security update
[22 Nov 2017] DSA-4046 libspring-ldap-java security update
[21 Nov 2017] DSA-4045 vlc security update
[21 Nov 2017] DSA-4044 swauth security update
[21 Nov 2017] DSA-4043 samba security update
[19 Nov 2017] DSA-4042 libxml-libxml-perl security update
[19 Nov 2017] DSA-4041 procmail security update
The latest Debian security advisories are also available in RDF format. We also offer a second file that includes the first paragraph of the corresponding advisory so you can see in it what the advisory is about.
The older security advisories are also available: 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997 and undated security advisories, included for posterity.
Debian distributions are not vulnerable to all security problems. The Debian Security Tracker collects all information about the vulnerability status of Debian packages, and can be searched by CVE name or by package.
Please read the Security Team FAQ before contacting us, your question may well be answered there already!
The contact information is in the FAQ as well.