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remove dos opportunity

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svn:r180
This commit is contained in:
Niels Provos 2005-08-30 06:02:09 +00:00
parent 5c5145dc1c
commit 7000fe664d
1 changed files with 4 additions and 0 deletions
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4
event_rpcgen.py
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@ -795,6 +795,10 @@ class EntryVarBytes(Entry):
def CodeUnmarshal(self, buf, tag_name, var_name):
code = ['if (evtag_payload_length(%s, &%s->%s_length) == -1)' % (
buf, var_name, self._name),
' return (-1);',
# We do not want DoS opportunities
'if (%s->%s_length > EVBUFFER_LENGTH(%s))' % (
var_name, self._name, buf),
' return (-1);',
'if ((%s->%s_data = malloc(%s->%s_length)) == NULL)' % (
var_name, self._name, var_name, self._name),