Vulnerability identifier: #VU12451

Vulnerability risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8154

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Exchange Server
Server applications / Mail servers

Vendor: Microsoft

Description

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

The vulnerability exists due to improper handling of objects in memory by Microsoft Exchange. A remote unauthenticated attacker can send a specially crafted email to a vulnerable Exchange server, trigger memory corruption and execute arbitrary code in the context of the System user.

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Exchange Server: 2013 Service Pack 1 15.00.0847.032 - 2013 Cumulative Update 20 15.00.1367.003, 2016 Cumulative Update 8 15.01.1415.002 - 2016 Cumulative Update 9 15.01.1466.003, 2010 Service Pack 3 Update Rollup 21

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8154

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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.