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James E. King, III commented on THRIFT-3062: -------------------------------------------- To properly test this, I'd like to have the unit test framework for TServerSocket in place from THRIFT-1025. > C++ TServerSocket invalid port number (over 999999) causes stack corruption > --------------------------------------------------------------------------- > > Key: THRIFT-3062 > URL: https://issues.apache.org/jira/browse/THRIFT-3062 > Project: Thrift > Issue Type: Bug > Components: C++ - Library > Affects Versions: 0.9.2 > Reporter: James E. King, III > Labels: security > Attachments: THRIFT-3062.patch > > > In {{TServerSocket::listen()}} a buffer of size 7 is allocated for the string > to numeric translation of the port number, defined as {{int}}: > {noformat} char port[sizeof("65536") + 1]; > ... > sprintf(port, "%d", port_);{noformat} > An input of 1000000 or more will cause stack corruption. Recommend changing > sprintf to something safer, or making a larger buffer. In this case, one can > safely allocate a fixed size buffer on the stack to accomodate the largest > result possible, avoiding the problem. Alternatively, ensure the input is > bound, which is what {{TSocket::localOpen()}} does. -- This message was sent by Atlassian JIRA (v6.3.4#6332)