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CCE
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CCE-33563-8

Platform: cpe:/o:microsoft:windows_8.1Date: (C)2015-10-14   (M)2023-07-14



Network access: Restrict anonymous access to Named Pipes and Shares When enabled, this policy setting restricts anonymous access to only those shares and pipes that are named in the Network access: Named pipes that can be accessed anonymously and Network access: Shares that can be accessed anonymously settings. This policy setting controls null session access to shares on your computers by adding RestrictNullSessAccess with the value 1 in the HKLMSystem CurrentControlSetServicesLanManServerParameters registry key. This registry value toggles null session shares on or off to control whether the server service restricts unauthenticated clients' access to named resources. Null sessions are a weakness that can be exploited through shares (including the default shares) on computers in your environment.


Parameter:

[enable/disable]


Technical Mechanism:

(1) GPO: Computer ConfigurationWindows SettingsSecurity SettingsLocal PoliciesSecurity Options!Network access: Restrict anonymous access to Named Pipes and Shares (2) REG: HKEY_LOCAL_MACHINESystemCurrentControlSetServicesLanManServerParameters!restrictnullsessaccess

CCSS Severity:CCSS Metrics:
CCSS Score : 7.0Attack Vector: NETWORK
Exploit Score: 2.2Attack Complexity: HIGH
Impact Score: 4.7Privileges Required: NONE
Severity: HIGHUser Interaction: NONE
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:LScope: UNCHANGED
 Confidentiality: HIGH
 Integrity: LOW
 Availability: LOW
  

References:
Resource IdReference
SCAP Repo OVAL Definitionoval:org.secpod.oval:def:22568


OVAL    1
oval:org.secpod.oval:def:22568
XCCDF    7
xccdf_org.secpod_benchmark_HIPAA_45CFR_164_Windows_8_1
xccdf_org.secpod_benchmark_ISO27001_Windows_8_1
xccdf_org.secpod_benchmark_NIST_800_53_r4_Windows_8_1
xccdf_org.secpod_benchmark_PCI_3_2_Windows_8_1
...

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