Vulnerability identifier: #VU14383

Vulnerability risk: Medium

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8273

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft SQL Server
Server applications / Database software

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 SQL queries. A remote attacker with ability to manipulate SQL query can trigger buffer overflow and execute arbitrary code on the vulnerable database server in the context of the SQL Server Database Engine service account. 

Please, note this vulnerability can be also exploited by anonymous attacker via SQL injection vulnerability.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft SQL Server: 2016 13.0.1601.5, 2017 14.0.1000.169

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8273

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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.