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/ jessie/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.
[03 May 2016] DSA-3566 openssl security update
[02 May 2016] DSA-3565 botan1.10 security update
[02 May 2016] DSA-3564 chromium-browser security update
[01 May 2016] DSA-3563 poppler security update
[01 May 2016] DSA-3562 tardiff security update
[29 Apr 2016] DSA-3561 subversion security update
[27 Apr 2016] DSA-3560 php5 security update
[27 Apr 2016] DSA-3559 iceweasel security update
[26 Apr 2016] DSA-3558 openjdk-7 security update
[26 Apr 2016] DSA-3557 mysql-5.5 security update
[24 Apr 2016] DSA-3556 libgd2 security update
[23 Apr 2016] DSA-3555 imlib2 security update
[22 Apr 2016] DSA-3553 varnish security update
[21 Apr 2016] DSA-3554 xen security update
[17 Apr 2016] DSA-3552 tomcat7 security update
[16 Apr 2016] DSA-3551 fuseiso security update
[15 Apr 2016] DSA-3550 openssh security update
[15 Apr 2016] DSA-3549 chromium-browser security update
[13 Apr 2016] DSA-3548 samba security update
[11 Apr 2016] DSA-3547 imagemagick security update
[07 Apr 2016] DSA-3546 optipng security update
[07 Apr 2016] DSA-3545 cgit security update
[07 Apr 2016] DSA-3544 python-django security update
[05 Apr 2016] DSA-3543 oar security update
[05 Apr 2016] DSA-3542 mercurial security update
[05 Apr 2016] DSA-3541 roundcube security update
[03 Apr 2016] DSA-3540 lhasa 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: 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.