Security Information

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.

Keeping your Debian system secure

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 buster/updates main contrib non-free

in your /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 signing keys.

For more information about security issues in Debian, please refer to the Security Team FAQ and a manual called Securing Debian.

Recent Advisories

These web pages include a condensed archive of security advisories posted to the debian-security-announce list.

[15 Sep 2019] DSA-4523 thunderbird security update
[15 Sep 2019] DSA-4522 faad2 security update
[09 Sep 2019] DSA-4521 security update
[09 Sep 2019] DSA-4520 trafficserver security update
[08 Sep 2019] DSA-4519 libreoffice security update
[07 Sep 2019] DSA-4518 ghostscript security update
[06 Sep 2019] DSA-4517 exim4 security update
[05 Sep 2019] DSA-4516 firefox-esr security update
[04 Sep 2019] DSA-4515 webkit2gtk security update
[04 Sep 2019] DSA-4514 varnish security update
[03 Sep 2019] DSA-4513 samba security update
[02 Sep 2019] DSA-4512 qemu security update
[01 Sep 2019] DSA-4511 nghttp2 security update
[28 Aug 2019] DSA-4510 dovecot security update
[26 Aug 2019] DSA-4509 apache2 security update
[24 Aug 2019] DSA-4508 h2o security update
[24 Aug 2019] DSA-4507 squid security update
[24 Aug 2019] DSA-4506 qemu security update
[22 Aug 2019] DSA-4505 nginx security update
[20 Aug 2019] DSA-4504 vlc security update
[18 Aug 2019] DSA-4503 golang-1.11 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: 2019, 2018, 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.

Contact Information

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.