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CCE
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CCE-47793-5

Platform: cpe:/o:microsoft:windows_server_2016Date: (C)2022-09-02   (M)2023-07-04



The registry value entry KeepAliveTime was added to the template file in the HKEY_LOCAL_MACHINESystemCurrentControlSetServicesTcpipParameters registry key. The entry appears as MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds (300,000 is recommended) in the SCE. This value controls how often TCP attempts to verify that an idle connection is still intact by sending a keep-alive packet. If the remote computer is still reachable, it acknowledges the keep-alive packet. Fix: (1) GPO: Computer ConfigurationWindows SettingsSecurity SettingsLocal PoliciesSecurity Options!MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds (2) REG: HKEY_LOCAL_MACHINESystemCurrentControlSetServicesTcpipParameters!KeepAliveTime


Parameter:

[5 mins]


Technical Mechanism:

(1) GPO: Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options!MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds (2) REG: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters!KeepAliveTime

CCSS Severity:CCSS Metrics:
CCSS Score : 7.4Attack Vector: NETWORK
Exploit Score: 2.2Attack Complexity: HIGH
Impact Score: 5.2Privileges Required: NONE
Severity: HIGHUser Interaction: NONE
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:HScope: UNCHANGED
 Confidentiality: HIGH
 Integrity: NONE
 Availability: HIGH
  

References:
Resource IdReference
SCAP Repo OVAL Definitionoval:org.secpod.oval:def:83727


OVAL    1
oval:org.secpod.oval:def:83727
XCCDF    1
xccdf_org.secpod_benchmark_general_Windows_Server_2016

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