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openSUSE-SU-2015:0712-1: moderate: Security update for tor
openSUSE Security Update: Security update for tor
______________________________________________________________________________

Announcement ID: openSUSE-SU-2015:0712-1
Rating: moderate
References: #926097
Cross-References: CVE-2015-2928 CVE-2015-2929
Affected Products:
openSUSE 13.2
openSUSE 13.1
______________________________________________________________________________

An update that fixes two vulnerabilities is now available.

Description:

Tor was updated to 0.2.4.27 to fix two security issues that could be used
by an attacker to crash hidden services, or crash clients visiting hidden
services. Hidden services should upgrade as soon as possible.

The following security issues were fixed:

* A malicious client could trigger an assertion failure and halt a hidden
service. (CVE-2015-2928)
* A client could crash with an assertion failure when parsing a malformed
hidden service descriptor. (CVE-2015-2929)

This release also backports a simple improvement to make hidden services a
bit less vulnerable to denial-of-service attacks:

* Introduction points no longer allow multiple INTRODUCE1 cells to arrive
on the same circuit. This should make it more expensive for attackers to
overwhelm hidden services with introductions.


Patch Instructions:

To install this openSUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:

- openSUSE 13.2:

zypper in -t patch openSUSE-2015-300=1

- openSUSE 13.1:

zypper in -t patch openSUSE-2015-300=1

To bring your system up-to-date, use "zypper patch".


Package List:

- openSUSE 13.2 (i586 x86_64):

tor-0.2.4.27-13.1
tor-debuginfo-0.2.4.27-13.1
tor-debugsource-0.2.4.27-13.1

- openSUSE 13.1 (i586 x86_64):

tor-0.2.4.27-5.30.1
tor-debuginfo-0.2.4.27-5.30.1
tor-debugsource-0.2.4.27-5.30.1


References:

https://www.suse.com/security/cve/CVE-2015-2928.html
https://www.suse.com/security/cve/CVE-2015-2929.html
https://bugzilla.suse.com/926097


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