[FD] Advisories Unsafe Dll in Audacity, telegram and Akamai

=====[ Tempest Security Intelligence - ADV-7/2016 ]============================= Unsafe DLL search path in Audacity 2.1.2 Author: Felipe Xavier Oliveira < engfilipeoliveira89 () gmail.com > Tempest Security Intelligence - Recife, Pernambuco - Brazil =====[ Table of Contents ]====================================================== 1. Overview 2. Detailed description 3. Further attack scenarios 4. Timeline of disclosure 5. Thanks & Acknowledgements 6. References =====[ 1. Overview ]============================================================ * System affected : Audacity [1]. * Software Version : 2.1.2 (other versions may also be affected). * Impact : A user may be infected by opening an audio file in Audacity, from an untrusted location i.e. usb flash drive, network file share. =====[ 2. Detailed description ]================================================ Audacity version 2.1.2 is vulnerable to DLL Hijack, it tries to load avformat-55.dll without supplying the absolute path, thus relying upon the presence of such DLL on the system directory. This behavior results in an exploitable DLL Hijack vulnerability, even if the SafeDllSerchMode flag is enabled. The vulnerability report can be found at the following URL: http://ift.tt/2hOxCOi Audacity neglected the risk associated with the vulnerability [2]. =====[ 3. Further attack scenarios ]============================================ The attacker can place a malicious dll named avformat-55.dll in the same folder of an Audacity project file. Upon opening the project file Audacity will load and execute the malicious code within its proccess context. The attack may be carried out remotely by inducing the victim to open the project file from an external storage device or a network file share. =====[ 4. Timeline of disclosure ]============================================== 08/15/2016 - Reported vulnerability. 08/15/2016 - Audacity neglected the risk. 12/11/2016 - Advisory publication date. =====[ 5. Thanks & Acknowledgements ]=========================================== - Breno Cunha < brenodario () gmail.com > - Felipe Azevedo < felipe3gomes () gmail.com > - Tempest Security Intelligence / Tempest's Pentest Team [3] =====[ 6. References ]========================================================== [1] http://ift.tt/1QxMVWY [2] http://ift.tt/2hOxCOi [3] http://ift.tt/1h6Hq1f =====[ EOF ]==================================================================== =====[ Tempest Security Intelligence - ADV-6/2016 ]============================= Unsafe DLL search path in Telegram Desktop 0.10.1 Author: Felipe Xavier Oliveira < engfilipeoliveira89 () gmail.com > Tempest Security Intelligence - Recife, Pernambuco - Brazil =====[ Table of Contents ]====================================================== 1. Overview 2. Detailed description 3. Timeline of disclosure 4. Thanks & Acknowledgements 5. References =====[ 1. Overview ]============================================================ * System affected : Telegram Desktop. * Platform : Windows. * Software Version : 0.10.1 (other versions may also be affected). * Impact : If a low privileged user is infected, a malware is capable of injecting code into Telegram process (and steal Telegram messages) without the need of privilege escalation (i.e. ability to write to Program Files and/or system32). =====[ 2. Detailed description ]================================================ Telegram Desktop version 0.10.1 is vulnerable to DLL Hijack, it tries to load "COMBASE.dll" without supplying the absolute path, thus relying upon the presence of such DLL on the system directory. The issue is aggravated on Windows 7 because the DLL is not present, resulting in an exploitable DLL Hijack vulnerability, even though the SafeDllSerchMode flag is enabled. =====[ 3. Timeline of disclosure ]============================================== 08/11/2016 - Reported vulnerability [1]. 08/14/2016 - Telegram fixed vulnerability [2]. 12/11/2016 - Advisory publication date. 16/12/2016 - CVE assigned [3]. =====[ 4. Thanks & Acknowledgements ]=========================================== - Breno Cunha < brenodario () gmail.com > - Felipe Azevedo < felipe3gomes () gmail.com > - Tempest Security Intelligence / Tempest's Pentest Team [4] =====[ 5. References ]========================================================== [1] http://ift.tt/2iy3QRJ [2] http://ift.tt/2hOqp0D [3] http://ift.tt/2iy2xCE [4] http://ift.tt/1h6Hq1f =====[ EOF ]==================================================================== =====[ Tempest Security Intelligence - ADV-8/2016 ]============================= Unsafe DLL search path in Akamai NetSession 1.9.3.1 Author: Felipe Xavier Oliveira < engfilipeoliveira89 () gmail.com > Tempest Security Intelligence - Recife, Pernambuco - Brazil =====[ Table of Contents ]====================================================== 1. Overview 2. Detailed description 3. Timeline of disclosure 4. Thanks & Acknowledgements 5. References =====[ 1. Overview ]============================================================ * System affected : Akamai NetSession [1]. * Software Version : 1.9.3.1 (other versions may also be affected). * Impact : If a low privileged user is infected, a malware is capable of injecting code into Akamai NetSession process without privilege elevation. =====[ 2. Detailed description ]================================================ Akamai Netsession 1.9.3.1 is vulnerable to DLL Hijack, it tries to load CSUNSAPI.dll without supplying the complete path. The issue is aggravated because the mentioned DLL is missing from its installation. Thus making it possible to hijack the DLL and subsequently inject code within Akamai NetSession process space. =====[ 3. Timeline of disclosure ]============================================= 09/23/2016 - Reported vulnerability to security@akamai.com. 09/23/2016 - Akamai acknowledges the vulnerability and asks for two weeks in order to fix the vulnerability. 10/07/2016 - Asked if they were able to fix it in the accorded time, but haven't heard back from them. 12/11/2016 - Advisory publication date. =====[ 4. Thanks & Acknowledgements ]=========================================== - Breno Cunha < brenodario () gmail.com > - Felipe Azevedo < felipe3gomes () gmail.com > - Tempest Security Intelligence / Tempest's Pentest Team [2] =====[ 5. References ]========================================================== [1] http://ift.tt/2hOsmuc interface-design.jsp [2] http://ift.tt/1h6Hq1f =====[ EOF ]==================================================================== Filipe Oliveira.

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