This patch contains:
* checks for malloc return value + treat callers;
* modified malloc() + ZeroMemory() to calloc();
* misc fixes of micro errors seen during the code audit:
** some invalid checks in gcc.c, also there were some possible
integer overflow. This is interesting because at the end the data are parsed
and freed directly, so it's a vulnerability in some kind of dead code (at least
useless);
** fixed usage of GetComputerNameExA with just one call, when 2 were used
in misc places. According to MSDN GetComputerNameA() is supposed to return
an error when called with NULL;
** there were a bug in the command line parsing of shadow;
** in freerdp_dynamic_channel_collection_add() the size of array was multiplied
by 4 instead of 2 on resize
Since commit a228952 FreeRDP generates corrupt licensing packets if the rdp
security layer is used and the peer did not indicate that it is capable of
processing encrypted licensing packets:
That commit changed rdp->sec_flags after the rdp stream was already initialized
with encryption enabled which placed the PDU payload at an incorrect offset.
Instead of directly modifying the rdp->sec_flags this patch temporarily
disables rdp->do_crypt during rdp stream initialization if the client has not
advertised support for encrypted licensing packets.
- fixed invalid stream position if extEncryptionMethods is not used
- enabled 56bit rdp security method
- fixed entropy reduction of the keys for 40 bit and 56 bit
- added rdp security incl. FIPS for fastpath output
- added FIPS encryption to fast path input
- fixed FIPS key generation in server mode
- fixed stream length correction in FIPS mode
- added rdp encryption for licensing packets (apparently some clients,
specifically cetsc, require the license packets received from the
server to be encrypted under certain RDP encryption levels)
- replace errnous virtual extended mouse event in focus in event
Malloc can fail so it will, this patch adds some check in some places
where malloc/strdup results were not checked.
This patch also contains a server side fix for RDP security (credit to nfedera).
The signature len was badly set in the GCC packet. And some other RDP security
oriented fixes are also there.
