Vulnerability identifier: #VU14369

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-2018-8302

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 boundary error when processing email messages within Microsoft Exchange server. A remote unauthenticated attacker can send a specially crafted email, trigger memory corruption and execute arbitrary code on the target system.

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: 2016 RTM 15.01.0225.042 - 2016 Cumulative Update 10 15.01.1531.003, 2013 RTM 15.00.0516.032 - 2013 Cumulative Update 21 15.00.1395.004, 2010 Service Pack 3 Update Rollup 23

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8302

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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.