Security Information / 2017 / Security Information -- DSA-3877-1 tor

Debian Security Advisory

DSA-3877-1 tor -- security update

Date Reported:

10 Jun 2017

Affected Packages:

tor

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 864424.
In Mitre's CVE dictionary: CVE-2017-0376.

More information:

It has been discovered that Tor, a connection-based low-latency anonymous communication system, contain a flaw in the hidden service code when receiving a BEGIN_DIR cell on a hidden service rendezvous circuit. A remote attacker can take advantage of this flaw to cause a hidden service to crash with an assertion failure (TROVE-2017-005).

For the stable distribution (jessie), this problem has been fixed in version 0.2.5.14-1.

For the upcoming stable distribution (stretch), this problem will be fixed in version 0.2.9.11-1~deb9u1.

For the unstable distribution (sid), this problem has been fixed in version 0.2.9.11-1.

We recommend that you upgrade your tor packages.