Microsoft Windows up to Server 2019 DNS Server memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
9.7 | $5k-$25k | 0.00 |
A vulnerability classified as very critical was found in Microsoft Windows up to Server 2019 (Operating System). Affected by this vulnerability is some unknown functionality of the component DNS Server. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.
The bug was discovered 12/11/2018. The weakness was released 12/11/2018 by Security Team (window) with Microsoft as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The public release was coordinated with Microsoft. This vulnerability is known as CVE-2018-8626 since 03/14/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 06/18/2023). The advisory points out:
A remote code execution vulnerability exists in Windows Domain Name System (DNS) servers when they fail to properly handle requests. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the Local System Account. Windows servers that are configured as DNS servers are at risk from this vulnerability.
The vulnerability scanner Nessus provides a plugin with the ID 119591 (KB4471332: Windows 10 Version 1809 and Windows Server 2019 December 2018 Security Update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91488 (Microsoft Windows Security Update December 2018).
Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (119591). Entries connected to this vulnerability are available at 127795, 127796, 127797 and 127798.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
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CVSSv3
VulDB Meta Base Score: 9.8VulDB Meta Temp Score: 9.7
VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
Vendor Base Score (Microsoft): 9.8
Vendor Vector (Microsoft): 🔍
NVD Base Score: 9.8
NVD Vector: 🔍
CVSSv2
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VulDB Base Score: 🔍
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Exploiting
Class: Memory corruptionCWE: CWE-119
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
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Nessus ID: 119591
Nessus Name: KB4471332: Windows 10 Version 1809 and Windows Server 2019 December 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
03/14/2018 🔍12/11/2018 🔍
12/11/2018 🔍
12/11/2018 🔍
12/11/2018 🔍
12/11/2018 🔍
12/11/2018 🔍
12/12/2018 🔍
06/18/2023 🔍
Sources
Vendor: microsoft.comProduct: microsoft.com
Advisory: portal.msrc.microsoft.com
Researcher: Security Team (window)
Organization: Microsoft
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍
CVE: CVE-2018-8626 (🔍)
SecurityFocus: 106076 - Microsoft Windows DNS Server CVE-2018-8626 Heap Buffer Overflow Vulnerability
scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔍
Entry
Created: 12/12/2018 07:43Updated: 06/18/2023 08:07
Changes: 12/12/2018 07:43 (85), 04/19/2020 17:01 (8), 06/18/2023 08:07 (4)
Complete: 🔍
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