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.
[19 Oct 2017] DSA-4003 libvirt security update
[19 Oct 2017] DSA-4002 mysql-5.5 security update
[19 Oct 2017] DSA-4001 yadifa security update
[17 Oct 2017] DSA-4000 xorg-server security update
[16 Oct 2017] DSA-3999 wpa security update
[11 Oct 2017] DSA-3998 nss security update
[10 Oct 2017] DSA-3997 wordpress security update
[10 Oct 2017] DSA-3996 ffmpeg security update
[10 Oct 2017] DSA-3995 libxfont security update
[07 Oct 2017] DSA-3994 nautilus security update
[06 Oct 2017] DSA-3993 tor security update
[06 Oct 2017] DSA-3992 curl security update
[03 Oct 2017] DSA-3991 qemu security update
[03 Oct 2017] DSA-3990 asterisk security update
[02 Oct 2017] DSA-3989 dnsmasq security update
[30 Sep 2017] DSA-3988 libidn2-0 security update
[29 Sep 2017] DSA-3987 firefox-esr security update
[29 Sep 2017] DSA-3986 ghostscript security update
[28 Sep 2017] DSA-3985 chromium-browser security update
[26 Sep 2017] DSA-3984 git security update
[22 Sep 2017] DSA-3983 samba security update
[21 Sep 2017] DSA-3982 perl security update
[20 Sep 2017] DSA-3981 linux security update
[20 Sep 2017] DSA-3980 apache2 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.