Debian Security Advisory

DLA-663-1 tor -- LTS security update

Date Reported:
18 Oct 2016
Affected Packages:
Security database references:
No other external database security references currently available.
More information:

It has been discovered that Tor treats the contents of some buffer chunks as if they were a NUL-terminated string. This issue could enable a remote attacker to crash a Tor client, hidden service, relay, or authority. This update aims to defend against this general class of security bugs.

For Debian 7 Wheezy, this problem has been fixed in version

For the stable distribution (jessie), this problem has been fixed in version, for unstable (sid) with version, and for experimental with

Additionally, for wheezy this updates the set of authority directory servers to the one from Tor, released in August 2016.

We recommend that you upgrade your tor packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: