#VU93977 Use-after-free in Microsoft SQL Server - CVE-2024-21303

Vulnerability identifier: #VU93977

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-21303

CWE-ID: CWE-416

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 use-after-free error in SQL Server Native Client OLE DB Provider. A remote attacker can trick a victim to connect to a malicious SQL server database and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft SQL Server: before 2016 SP3, 2017 CU31, 2017, 2019 CU27, 2019, 2022 CU13, 2022, 2016 SP3, 2016 SP3, 2016 SP3, 2016 SP3

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External links
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21303

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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.