Vulnerability identifier: #VU12452

Vulnerability risk: Low

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8151

CWE-ID: CWE-125

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 obtain potentially sensitive information 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 out-of-bounds read and access sensitive information that can be used in further attacks.

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-2018-8151

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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.