CVE-2021-33745: Windows DNS Server Denial of Service Vulnerability
This Microsoft advisory covers CVE-2021-33745 in Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2008 Service Pack 2 (Server Core installation) and Windows Server 2012 (Server Core installation).
- CVE-2021-33745
Key facts
- Vendor rating
- Medium, CVSS 6.5
- CISA KEV
- Not listed (catalogue checked )
- Affected
- Windows Server 2008 R2 Service Pack 1 6.1.7601.0 before 6.1.7601.25661; Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 before 6.1.7601.25661; Windows Server 2008 Service Pack 2 6.0.6003.0 before 6.0.6003.21167 and 9 more below
- Fixed in
- 6.1.7601.25661, 6.0.6003.21167, 6.2.9200.23409 and 5 more below
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
Windows DNS Server Denial of Service Vulnerability
Affected products named by the advisory: Windows Server 2008 R2 Service Pack 1; Windows Server 2008 R2 Service Pack 1 (Server Core installation); Windows Server 2008 Service Pack 2; Windows Server 2008 Service Pack 2 (Server Core installation); and 10 more.
Affected products named by the advisory: Windows Server 2012 (Server Core installation); Windows Server 2012 R2 (Server Core installation); Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); and 2 more.
Text from the source record.
- Windows Server 2008 R2 Service Pack 1 6.1.7601.0 before 6.1.7601.25661
- Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 before 6.1.7601.25661
- Windows Server 2008 Service Pack 2 6.0.6003.0 before 6.0.6003.21167
- Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 before 6.0.6003.21167
- Windows Server 2012 6.2.9200.0 before 6.2.9200.23409
- Windows Server 2012 (Server Core installation) 6.2.9200.0 before 6.2.9200.23409
- Windows Server 2012 R2 6.3.9600.0 before 6.3.9600.20069
- Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 before 6.3.9600.20069
- Windows Server 2016 10.0.14393.0 before 10.0.14393.4530
- Windows Server 2016 (Server Core installation) 10.0.14393.0 before 10.0.14393.4530
- Windows Server 2019 10.0.17763.0 before 10.0.17763.2061
- Windows Server 2019 (Server Core installation) 10.0.17763.0 before 10.0.17763.2061
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2021-33745
Upgrade to a fixed release named by Microsoft:
- 6.1.7601.25661
- 6.0.6003.21167
- 6.2.9200.23409
- 6.3.9600.20069
- 10.0.14393.4530
- 10.0.17763.2061
- 10.0.19041.1110
- 10.0.19042.1110
End-of-life dates for Windows Server
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