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Fixes #3864: Disallow /0 masks

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This commit is contained in:
Saria Hajjar
2020-01-09 14:33:49 +00:00
parent 770f4c962c
commit 6537f35176
2 changed files with 19 additions and 0 deletions
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18
netbox/ipam/models.py
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@ -177,6 +177,12 @@ class Aggregate(ChangeLoggedModel, CustomFieldModel):
# Clear host bits from prefix
self.prefix = self.prefix.cidr
# /0 masks are not acceptable
if self.prefix.prefixlen == 0:
raise ValidationError({
'prefix': "Cannot create aggregate with /0 mask."
})
# Ensure that the aggregate being added is not covered by an existing aggregate
covering_aggregates = Aggregate.objects.filter(prefix__net_contains_or_equals=str(self.prefix))
if self.pk:
@ -347,6 +353,12 @@ class Prefix(ChangeLoggedModel, CustomFieldModel):
if self.prefix:
# /0 masks are not acceptable
if self.prefix.prefixlen == 0:
raise ValidationError({
'prefix': "Cannot create prefix with /0 mask."
})
# Disallow host masks
if self.prefix.version == 4 and self.prefix.prefixlen == 32:
raise ValidationError({
@ -622,6 +634,12 @@ class IPAddress(ChangeLoggedModel, CustomFieldModel):
if self.address:
# /0 masks are not acceptable
if self.address.prefixlen == 0:
raise ValidationError({
'address': "Cannot create IP address with /0 mask."
})
# Enforce unique IP space (if applicable)
if self.role not in IPADDRESS_ROLES_NONUNIQUE and ((
self.vrf is None and settings.ENFORCE_GLOBAL_UNIQUE