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.

[17 Nov 2019] DSA-4571 thunderbird security update
[17 Nov 2019] DSA-4570 mosquitto security update
[14 Nov 2019] DSA-4569 ghostscript security update
[14 Nov 2019] DSA-4568 postgresql-common security update
[13 Nov 2019] DSA-4565 intel-microcode security update
[12 Nov 2019] DSA-4567 dpdk security update
[12 Nov 2019] DSA-4566 qemu security update
[12 Nov 2019] DSA-4564 linux security update
[12 Nov 2019] DSA-4563 webkit2gtk security update
[10 Nov 2019] DSA-4562 chromium security update
[08 Nov 2019] DSA-4561 fribidi security update
[06 Nov 2019] DSA-4560 simplesamlphp security update
[05 Nov 2019] DSA-4559 proftpd-dfsg security update
[04 Nov 2019] DSA-4558 webkit2gtk security update
[31 Oct 2019] DSA-4557 libarchive security update
[31 Oct 2019] DSA-4556 qtbase-opensource-src security update
[29 Oct 2019] DSA-4555 pam-python security update
[28 Oct 2019] DSA-4554 ruby-loofah security update
[28 Oct 2019] DSA-4553 php7.3 security update
[28 Oct 2019] DSA-4552 php7.0 security update
[25 Oct 2019] DSA-4551 golang-1.11 security update
[25 Oct 2019] DSA-4550 file security update
[24 Oct 2019] DSA-4549 firefox-esr security update
[21 Oct 2019] DSA-4548 openjdk-8 security update
[21 Oct 2019] DSA-4547 tcpdump security update
[20 Oct 2019] DSA-4546 openjdk-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.