#VU74884 Out-of-bounds write in Microsoft SQL Server - CVE-2023-23384

Vulnerability identifier: #VU74884

Vulnerability risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-23384

CWE-ID: CWE-787

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 compromise vulnerable system.

The vulnerability exists due to a boundary error within the SQLcmd tool. A remote attacker can pass specially crafted data to the server, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft SQL Server: 2008 RC0 10.0.1442.32 - 2008 CU17 10.0.5861.0, 2012 RC0 11.0.1750.32 - 2012 CU16 11.0.5678.0, 2014 CTP 1 11.0.9120.0 - 2014 CU18 12.0.5687.1, 2016 RC0 13.0.1100.288 - 2016 CU17 13.0.5888.11, 2017 CTP 1 14.0.1.246 - 2017 CU31 14.0.3460.9, 2019 RC1 15.0.1900.25 - 2019 CU19 15.0.4298.1, 2022 RC0 16.0.900.6 - 2022 GDR 16.0.1050.5

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-23384

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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.