This macro checks if a pointer is valid _after_ we've already used
that pointer. So it will only trigger if we're already performed some
for of buffer overflow. As such, it provides little to no value and
can only server to encourage broken behaviour.
Let's remove it and replace it with proper bounds checking before
access instead.
This commit includes fixes for a set of 21 vulnerabilities in
rdesktop when a malicious RDP server is used.
All vulnerabilities was identified and reported by Eyal Itkin.
* Add rdp_protocol_error function that is used in several fixes
* Refactor of process_bitmap_updates
* Fix possible integer overflow in s_check_rem() on 32bit arch
* Fix memory corruption in process_bitmap_data - CVE-2018-8794
* Fix remote code execution in process_bitmap_data - CVE-2018-8795
* Fix remote code execution in process_plane - CVE-2018-8797
* Fix Denial of Service in mcs_recv_connect_response - CVE-2018-20175
* Fix Denial of Service in mcs_parse_domain_params - CVE-2018-20175
* Fix Denial of Service in sec_parse_crypt_info - CVE-2018-20176
* Fix Denial of Service in sec_recv - CVE-2018-20176
* Fix minor information leak in rdpdr_process - CVE-2018-8791
* Fix Denial of Service in cssp_read_tsrequest - CVE-2018-8792
* Fix remote code execution in cssp_read_tsrequest - CVE-2018-8793
* Fix Denial of Service in process_bitmap_data - CVE-2018-8796
* Fix minor information leak in rdpsnd_process_ping - CVE-2018-8798
* Fix Denial of Service in process_secondary_order - CVE-2018-8799
* Fix remote code execution in in ui_clip_handle_data - CVE-2018-8800
* Fix major information leak in ui_clip_handle_data - CVE-2018-20174
* Fix memory corruption in rdp_in_unistr - CVE-2018-20177
* Fix Denial of Service in process_demand_active - CVE-2018-20178
* Fix remote code execution in lspci_process - CVE-2018-20179
* Fix remote code execution in rdpsnddbg_process - CVE-2018-20180
* Fix remote code execution in seamless_process - CVE-2018-20181
* Fix remote code execution in seamless_process_line - CVE-2018-20182
This commit will add a logging system to solve the problem that
one actually need to recompile rdesktop from source to enable
different debug logging.
- Same logging api for all kind of logging and messages to
end user.
- Adding -v for verbose output when running rdesktop.
- All messages are logged into a subject and with a type, eg:
logger(Keyboard, Notice, "Autos-electing %s based on locale.", locale);
- Debug logging is enabled trough a environment variable RDEKSTOP_DEBUG,
which specifies subjects of interest, comma separated. There is a special
subject named All which includes all subject for debug loggin. There is also
a simple logic opeartor '!' = NOT which can be used in combination like:
RDESKTOP_DEBUG=All,!Graphics,!Sound
Which would give debug log output for All subject except Graphics and Sound.
adding Enhanced RDP Security support to rdesktop and brings
support for TLSv1 tunnel functionality.
git-svn-id: svn://svn.code.sf.net/p/rdesktop/code/rdesktop/trunk@1659 423420c4-83ab-492f-b58f-81f9feb106b5
change year in files
add missing docu for updated commandline-flags
update changelog
git-svn-id: svn://svn.code.sf.net/p/rdesktop/code/trunk/rdesktop@827 423420c4-83ab-492f-b58f-81f9feb106b5
"orders.c", line 887: a cast does not yield an lvalue
Fix warnings:
"rdp.c", line 550: warning: integer overflow detected: op "<<"
"cache.c", line 42: warning: initializer does not fit or is out of range: -1
git-svn-id: svn://svn.code.sf.net/p/rdesktop/code/trunk/rdesktop@725 423420c4-83ab-492f-b58f-81f9feb106b5
bitmap header any longer, instead the size of the compressed bitmap data is sent in the bitmapLength
field of the cache bitmap order. Of course this doesn't concur with T.128.
Added more detailed debugging which helped in finding this.
git-svn-id: svn://svn.code.sf.net/p/rdesktop/code/trunk/rdesktop@354 423420c4-83ab-492f-b58f-81f9feb106b5
instead of reading it itself. Adaptation for the RDP5 code to work.
Added some debugging.
Indent fixes.
git-svn-id: svn://svn.code.sf.net/p/rdesktop/code/trunk/rdesktop@348 423420c4-83ab-492f-b58f-81f9feb106b5
