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Modify nonroot, hostaccess, and hostmount-anyuid SCCs to drop some capabilities #16436

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Sep 28, 2017
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Modify nonroot, hostaccess, and hostmount-anyuid SCCs to drop some capabilities #16436

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3 changes: 3 additions & 0 deletions pkg/cmd/server/bootstrappolicy/securitycontextconstraints.go
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,7 @@ func GetBootstrapSecurityContextConstraints(sccNameToAdditionalGroups map[string
SupplementalGroups: securityapi.SupplementalGroupsStrategyOptions{
Type: securityapi.SupplementalGroupsStrategyRunAsAny,
},
RequiredDropCapabilities: []kapi.Capability{"KILL", "MKNOD", "SETUID", "SETGID"},
},
// SecurityContextConstraintHostMountAndAnyUID is the same as the restricted scc but allows the use of the hostPath and NFS plugins, and running as any UID.
// Used by the PV recycler.
Expand Down Expand Up @@ -143,6 +144,7 @@ func GetBootstrapSecurityContextConstraints(sccNameToAdditionalGroups map[string
SupplementalGroups: securityapi.SupplementalGroupsStrategyOptions{
Type: securityapi.SupplementalGroupsStrategyRunAsAny,
},
RequiredDropCapabilities: []kapi.Capability{"MKNOD"},
},
// SecurityContextConstraintHostNS allows access to everything except privileged on the host
// but still allocates UIDs and SELinux.
Expand Down Expand Up @@ -176,6 +178,7 @@ func GetBootstrapSecurityContextConstraints(sccNameToAdditionalGroups map[string
SupplementalGroups: securityapi.SupplementalGroupsStrategyOptions{
Type: securityapi.SupplementalGroupsStrategyRunAsAny,
},
RequiredDropCapabilities: []kapi.Capability{"KILL", "MKNOD", "SETUID", "SETGID"},
},
// SecurityContextConstraintRestricted allows no host access and allocates UIDs and SELinux.
{
Expand Down