Menu
Patch closes security hole in messaging encryption tool

Patch closes security hole in messaging encryption tool

The up-to-date version of the component, libotr, is 4.1.1

A software component for encrypting instant messaging clients has a flaw that could let attackers take over users' machines, but there's now a patch for the vulnerability.

The vulnerability is contained in libotr, short for OTR Messaging Library and Toolkit. The up-to-date version is now 4.1.1.

OTR stands for Off-the-Record Messaging. It's a a cryptographic protocol that scrambles messages sent through clients including Pidgin, ChatSecure and Adium.

The integer overflow flaw was found by Markus Vervier of the German company X41 D-Sec, which released an advisory

"This flaw could potentially be exploited by a remote attacker to cause a heap buffer overflow and subsequently for arbitrary code to be executed on the user's machine," X41 D-Sec wrote.

The company found the flaw during a manual code review. It can be exploited by sending a very large message from one client to another, which causes an integer overflow that leads to a heap overflow on 64-bit architectures, X41 D-Sec wrote.

The message sent must be more than 5.5 GB. That's huge, but OTR allows for sending fragmented messages that are then assembled by libotr, the company wrote.

"Sending such a message to a Pidgin client took only a few minutes on a fast network connection without visible signs of any attack to a user," it wrote.

The latest version of libotr can be downloaded here.

Follow Us

Join the New Zealand Reseller News newsletter!

Error: Please check your email address.

Featured

Slideshows

Arrow exclusively introduces Tenable Network Security to A/NZ channel

Arrow exclusively introduces Tenable Network Security to A/NZ channel

Arrow Electronics introduced Tenable Network Security to local resellers in Sydney last week, officially launching the distributor's latest security partnership across Australia and New Zealand. Representing the first direct distribution agreement locally for Tenable specifically, the deal sees Arrow deliver security solutions directly to mid-market and enterprise channel partners on both sides of the Tasman.

Arrow exclusively introduces Tenable Network Security to A/NZ channel
Examining the changing job scene in the Kiwi channel

Examining the changing job scene in the Kiwi channel

Typically, the New Year brings new opportunities for personnel within the Kiwi channel. 2017 started no differently, with a host of appointments, departures and reshuffles across vendor, distributor and reseller businesses. As a result, the job scene across New Zealand has changed - here’s a run down of who is working where in the year ahead…

Examining the changing job scene in the Kiwi channel
​What are the top 10 tech trends for New Zealand in 2017?

​What are the top 10 tech trends for New Zealand in 2017?

Digital Transformation (DX) has been a critical topic for business over the last few years and IDC is now predicting a step change as DX reaches macroeconomic levels. By 2020 a DX economy will emerge and it will become the core of what New Zealand industries focus on. From the board level through to the C-Suite, Kiwi organisations must be prepared to think and act digital when the DX economy emerges in 2017.

​What are the top 10 tech trends for New Zealand in 2017?
Show Comments