#VU25231 Input validation error in Microsoft SQL Server - CVE-2020-0618

Vulnerability identifier: #VU25231

Vulnerability risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2020-0618

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: Yes

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 insufficient validation of page requests. A remote authenticated attacker can submit a specially crafted page request to the affected Reporting Services instance and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft SQL Server: 2012 11.0.2100.60, 2014 12.0.2000.8, 2016 13.0.1601.5

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0618
https://github.com/rapid7/metasploit-framework/tree/master/modules/exploits/windows/http/ssrs_navcorrector_viewstate.rb

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.