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.

Slideshows

Top 50 defining moments of the New Zealand channel in 2016

Top 50 defining moments of the New Zealand channel in 2016

Reseller News looks back on a tumultuous 12 months for the New Zealand channel, assessing the fallout from a year of sizeable industry change. Whether it be local or global mergers and acquisitions, distribution deals or job changes, the channel that started the year differs somewhat to the one set to finish it - Reseller News assesses the key moments that made 2016.​

Top 50 defining moments of the New Zealand channel in 2016
​Hewlett Packard Enterprise honours high achieving NZ channel

​Hewlett Packard Enterprise honours high achieving NZ channel

Hewlett Packard Enterprise honoured its top performing Kiwi partners at the second running of its HPE Partner Awards in New Zealand, held at a glitzy ceremony in Auckland. Recognising excellence across eight categories - from distributors to resellers - the tech giant celebrated its first year as a standalone company, following its official split from HP in 2015.

​Hewlett Packard Enterprise honours high achieving NZ channel
Nutanix treats channel partners to Christmas cruise

Nutanix treats channel partners to Christmas cruise

Nutanix recently took to the seas for a Christmas Cruise around Sydney Harbour with its Australia and New Zealand staff, customers and partners to celebrate a stellar year for the vendor. With the sun out, they were all smiles and mingled over drinks and food.

Nutanix treats channel partners to Christmas cruise
Show Comments