Microsoft Desktop Client for Mac up to 8.0.36 privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Desktop Client for Mac up to 8.0.36. It has been declared as critical. This issue affects some unknown processing. Executing a manipulation can lead to privileges management. The attack may be performed from remote. In addition, an exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Microsoft Desktop Client for Mac up to 8.0.36. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 12/07/2016 by Filippo Cavallarin as Microsoft Remote Desktop Client for Mac Remote Code Execution / SGMA16-004 as not defined mailinglist post (Bugtraq). The advisory is shared for download at seclists.org. The attack can be initiated remotely. Required for exploitation is a single authentication. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1068. The advisory points out:

A vulnerability exists in Microsoft Remote Desktop for Mac that allows a remote attacker to execute arbitrary code on the target machine. User interaction is needed to exploit this issue, but a single click on a link (sent via mail, iMessage, etc.) is sufficient to trigger the vulnerability. Since Microsoft has not released a fix yet, we won't provide any further information until the bug is fixed.

A public exploit has been developed by Filippo Cavallarin and been published immediately after the advisory. It is possible to download the exploit at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 147 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (41149). Additional details are provided at wearesegment.com. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

Video

Youtube: Not available anymore

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.5

VulDB Base Score: 6.3
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Filippo Cavallarin
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

07/13/2016 🔍
12/07/2016 +147 days 🔍
12/07/2016 +0 days 🔍
12/09/2016 +2 days 🔍
01/23/2017 +45 days 🔍
08/24/2019 +943 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: Microsoft Remote Desktop Client for Mac Remote Code Execution / SGMA16-004
Researcher: Filippo Cavallarin
Status: Not defined

GCVE (VulDB): GCVE-100-93988
scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 12/09/2016 08:53
Updated: 08/24/2019 12:22
Changes: 12/09/2016 08:53 (48), 08/24/2019 12:22 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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