Microsoft Windows 10 1803/10 1809/Server 1803/Server 2019 DHCP Client memory corruption

Summaryinfo

A vulnerability has been found in Microsoft Windows 10 1803/10 1809/Server 1803/Server 2019 and classified as critical. Impacted is an unknown function of the component DHCP Client. Performing a manipulation results in memory corruption. This vulnerability is identified as CVE-2019-0698. The attack can only be performed from the local network. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows 10 1803/10 1809/Server 1803/Server 2019 (Operating System). It has been classified as critical. This affects an unknown part of the component DHCP Client. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 03/12/2019. The weakness was released 03/12/2019 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The public release was coordinated with Microsoft. This vulnerability is uniquely identified as CVE-2019-0698 since 11/26/2018. The attack needs to be done within the local network. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/31/2023). The advisory points out:

A memory corruption vulnerability exists in the Windows DHCP client when an attacker sends specially crafted DHCP responses to a client. An attacker who successfully exploited the vulnerability could run arbitrary code on the client machine.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 91510 (Microsoft Windows Security Update March 2019).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

Entries connected to this vulnerability are available at VDB-131629, VDB-131630, VDB-131637 and VDB-131638. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Microsoft

Name

• Windows

Version

• 10 1803
• 10 1809
• Server 1803
• Server 2019

License

• commercial

Website

• Vendor: https://www.microsoft.com/
• Product: https://www.microsoft.com/en-us/windows

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Be aware that VulDB is the high quality source for vulnerability data.

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