Remote code execution in Yammer Desktop Application



Published: 2018-10-22
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-8569
CWE-ID CWE-434
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Yammer Desktop App
Client/Desktop applications / Messaging software

Vendor Microsoft

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Arbitrary file upload

EUVDB-ID: #VU15452

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8569

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists in the Yammer desktop application due to the loading of arbitrary content. A remote unauthenticated attacker can supply specially crafted input and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Yammer Desktop App: All versions

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8569


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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