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.

[18 Oct 2019] DSA-4545 mediawiki security update
[16 Oct 2019] DSA-4544 unbound security update
[14 Oct 2019] DSA-4543 sudo security update
[06 Oct 2019] DSA-4542 jackson-databind security update
[04 Oct 2019] DSA-4541 libapreq2 security update
[01 Oct 2019] DSA-4540 openssl1.0 security update
[01 Oct 2019] DSA-4539 openssl security update
[29 Sep 2019] DSA-4538 wpa security update
[28 Sep 2019] DSA-4537 file-roller security update
[28 Sep 2019] DSA-4536 exim4 security update
[27 Sep 2019] DSA-4535 e2fsprogs security update
[27 Sep 2019] DSA-4534 golang-1.11 security update
[25 Sep 2019] DSA-4533 lemonldap-ng security update
[25 Sep 2019] DSA-4532 spip security update
[25 Sep 2019] DSA-4531 linux security update
[22 Sep 2019] DSA-4530 expat security update
[20 Sep 2019] DSA-4529 php7.0 security update
[19 Sep 2019] DSA-4528 bird security update
[19 Sep 2019] DSA-4527 php7.3 security update
[19 Sep 2019] DSA-4526 opendmarc 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.