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* dix: integer overflow in REQUEST_FIXED_SIZE() [CVE-2014-8092 4/4]Alan Coopersmith2015-02-141-1/+4
| | | | | | | | | | | | | Force use of 64-bit integers when evaluating data provided by clients in 32-bit fields which can overflow when added or multiplied during checks. Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> RHEL5: add #include <stdint.h> for uint64_t v3: backport to nx-libs 3.6.x (Mike DePaulo)
* dix: integer overflow in RegionSizeof() [CVE-2014-8092 3/4]Alan Coopersmith2015-02-142-15/+34
| | | | | | | | | | | | | | | | | | RegionSizeof contains several integer overflows if a large length value is passed in. Once we fix it to return 0 on overflow, we also have to fix the callers to handle this error condition v2: Fixed limit calculation in RegionSizeof as pointed out by jcristau. v3: backport to nx-libs 3.6.x (Mike DePaulo) Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Julien Cristau <jcristau@debian.org> Conflicts: dix/region.c include/regionstr.h
* dix: integer overflow in GetHosts() [CVE-2014-8092 2/4]Alan Coopersmith2015-02-141-0/+6
| | | | | | | | | | | | | | | | | | | | GetHosts() iterates over all the hosts it has in memory, and copies them to a buffer. The buffer length is calculated by iterating over all the hosts and adding up all of their combined length. There is a potential integer overflow, if there are lots and lots of hosts (with a combined length of > ~4 gig). This should be possible by repeatedly calling ProcChangeHosts() on 64bit machines with enough memory. This patch caps the list at 1mb, because multi-megabyte hostname lists for X access control are insane. v2: backport to nx-libs 3.6.x (Mike DePaulo) Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Conflicts: os/access.c
* dix: integer overflow in ProcPutImage() [CVE-2014-8092 1/4]Alan Coopersmith2015-02-141-1/+3
| | | | | | | | | | | | | | | | | ProcPutImage() calculates a length field from a width, left pad and depth specified by the client (if the specified format is XYPixmap). The calculations for the total amount of memory the server needs for the pixmap can overflow a 32-bit number, causing out-of-bounds memory writes on 32-bit systems (since the length is stored in a long int variable). v2: backport to nx-libs 3.6.x (Mike DePaulo) Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Conflicts: dix/dispatch.c
* unchecked malloc may allow unauthed client to crash Xserver [CVE-2014-8091]Alan Coopersmith2015-02-141-0/+4
| | | | | | | | | | | | | | | | | | authdes_ezdecode() calls malloc() using a length provided by the connection handshake sent by a newly connected client in order to authenticate to the server, so should be treated as untrusted. It didn't check if malloc() failed before writing to the newly allocated buffer, so could lead to a server crash if the server fails to allocate memory (up to UINT16_MAX bytes, since the len field is a CARD16 in the X protocol). Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Conflicts: os/rpcauth.c
* CVE-2014-0210: unvalidated length fields in fs_read_list_info() from ↵Mike DePaulo2015-02-141-1/+55
| | | | | | | | | xorg/lib/libXfont commit d338f81df1e188eb16e1d6aeea7f4800f89c1218 fs_read_list_info() parses a reply from the font server. The reply contains a number of additional data items with embedded length or count fields, none of which are validated. This can cause out of bound reads when looping over these items in the reply.
* CVE-2014-0210: unvalidated length fields in fs_read_list() from ↵Mike DePaulo2015-02-141-0/+15
| | | | | | | | | xorg/lib/libXfont commit 5fa73ac18474be3032ee7af9c6e29deab163ea39 fs_read_list() parses a reply from the font server. The reply contains a list of strings with embedded length fields, none of which are validated. This can cause out of bound reads when looping over the strings in the reply.
* CVE-2014-0210: unvalidated length fields in fs_read_glyphs() from ↵Mike DePaulo2015-02-141-1/+28
| | | | | | | | | xorg/lib/libXfont commit 520683652564c2a4e42328ae23eef9bb63271565 fs_read_glyphs() parses a reply from the font server. The reply contains embedded length fields, none of which are validated. This can cause out of bound reads when looping over the glyph bitmaps in the reply.
* CVE-2014-0210: unvalidated length fields in fs_read_extent_info() from ↵Mike DePaulo2015-02-141-0/+10
| | | | | | | | xorg/lib/libXfont commit a3f21421537620fc4e1f844a594a4bcd9f7e2bd8 Looping over the extents in the reply could go past the end of the reply buffer if the reply indicated more extents than could fit in the specified reply length.
* CVE-2014-0211: integer overflow in fs_alloc_glyphs() from xorg/lib/libXfont ↵Mike DePaulo2015-02-141-1/+6
| | | | | | | | commit a42f707f8a62973f5e8bbcd08afb10a79e9cee33 fs_alloc_glyphs() is a malloc wrapper used by the font code. It contains a classic integer overflow in the malloc() call, which can cause memory corruption.
* CVE-2014-0211: integer overflow in fs_read_extent_info() from ↵Mike DePaulo2015-02-141-1/+11
| | | | | | | | | xorg/lib/libXfont commit c578408c1fd4db09e4e3173f8a9e65c81cc187c1 fs_read_extent_info() parses a reply from the font server. The reply contains a 32bit number of elements field which is used to calculate a buffer length. There is an integer overflow in this calculation which can lead to memory corruption.
* CVE-2014-0210: unvalidated length fields in fs_read_query_info() from ↵Mike DePaulo2015-02-142-7/+52
| | | | | | | | | xorg/lib/libXfont commit 491291cabf78efdeec8f18b09e14726a9030cc8f fs_read_query_info() parses a reply from the font server. The reply contains embedded length fields, none of which are validated. This can cause out of bound reads in either fs_read_query_info() or in _fs_convert_props() which it calls to parse the fsPropInfo in the reply.
* CVE-2014-0211: Integer overflow in fs_get_reply/_fs_start_read from ↵Mike DePaulo2015-02-141-0/+18
| | | | | | | | | | | | | | | | | | | | xorg/lib/libXfont commit 0f1a5d372c143f91a602bdf10c917d7eabaee09b fs_get_reply() would take any reply size, multiply it by 4 and pass to _fs_start_read. If that size was bigger than the current reply buffer size, _fs_start_read would add it to the existing buffer size plus the buffer size increment constant and realloc the buffer to that result. This math could overflow, causing the code to allocate a smaller buffer than the amount it was about to read into that buffer from the network. It could also succeed, allowing the remote font server to cause massive allocations in the X server, possibly using up all the address space in a 32-bit X server, allowing the triggering of other bugs in code that fails to handle malloc failure properly. This patch protects against both problems, by disconnecting any font server trying to feed us more than (the somewhat arbitrary) 64 mb in a single reply.
* CVE-2014-0210: unvalidated lengths when reading replies from font server ↵Mike DePaulo2015-02-141-6/+38
| | | | | | | | from xorg/lib/libXfont commit cbb64aef35960b2882be721f4b8fbaa0fb649d12 Functions to handle replies to font server requests were casting replies from the generic form to reply specific structs without first checking that the reply was at least as long as the struct being cast to.
* Don't crash when we receive an FS_Error from the font server (Guillem ↵Mike DePaulo2015-02-141-1/+1
| | | | Jover). from xorg/lib/libXfont commit bfb8a71f4f7e5c5ed4278cb3ee271bf9990d276d
* CVE-2014-0210: unvalidated length in _fs_recv_conn_setup() from ↵Mike DePaulo2015-02-141-3/+18
| | | | | | | | | | | | | xorg/lib/libXfont commit 891e084b26837162b12f841060086a105edde86d The connection setup reply from the font server can include a list of alternate servers to contact if this font server stops working. The reply specifies a total size of all the font server names, and then provides a list of names. _fs_recv_conn_setup() allocated the specified total size for copying the names to, but didn't check to make sure it wasn't copying more data to that buffer than the size it had allocated.
* CVE-2014-0209: integer overflow of realloc() size in lexAlias() from ↵Mike DePaulo2015-02-141-0/+4
| | | | | | | | | | | | | | | xorg/lib/libXfont commit 05c8020a49416dd8b7510cbba45ce4f3fc81a7dc lexAlias() reads from a file in a loop. It does this by starting with a 64 byte buffer. If that size limit is hit, it does a realloc of the buffer size << 1, basically doubling the needed length every time the length limit is hit. Eventually, this will shift out to 0 (for a length of ~4gig), and that length will be passed on to realloc(). A length of 0 (with a valid pointer) causes realloc to free the buffer on most POSIX platforms, but the caller will still have a pointer to it, leading to use after free issues.
* CVE-2014-0209: integer overflow of realloc() size in FontFileAddEntry() from ↵Mike DePaulo2015-02-141-0/+5
| | | | | | | | | | | | | | | xorg/lib/libXfont commit 2f5e57317339c526e6eaee1010b0e2ab8089c42e FontFileReadDirectory() opens a fonts.dir file, and reads over every line in an fscanf loop. For each successful entry read (font name, file name) a call is made to FontFileAddFontFile(). FontFileAddFontFile() will add a font file entry (for the font name and file) each time it’s called, by calling FontFileAddEntry(). FontFileAddEntry() will do the actual adding. If the table it has to add to is full, it will do a realloc, adding 100 more entries to the table size without checking to see if that will overflow the int used to store the size.
* CVE-2013-6462: unlimited sscanf overflows stack buffer in ↵Mike DePaulo2015-02-141-1/+1
| | | | | | | | bdfReadCharacters() from xorg/lib/libXfont http://lists.x.org/archives/xorg-announce/2014-January/002389.html Fixes cppcheck warning: [lib/libXfont/src/bitmap/bdfread.c:341]: (warning) scanf without field width limits can crash with huge input data.
* Avoid use-after-free in dix/dixfonts.c: doImageText() [CVE-2013-4396] from ↵Mike DePaulo2015-02-141-0/+5
| | | | | | | | | | | | | | | | | | | | | xorg/Xserver http://lists.x.org/archives/xorg-announce/2013-October/002332.html Save a pointer to the passed in closure structure before copying it and overwriting the *c pointer to point to our copy instead of the original. If we hit an error, once we free(c), reset c to point to the original structure before jumping to the cleanup code that references *c. Since one of the errors being checked for is whether the server was able to malloc(c->nChars * itemSize), the client can potentially pass a number of characters chosen to cause the malloc to fail and the error path to be taken, resulting in the read from freed memory. Since the memory is accessed almost immediately afterwards, and the X server is mostly single threaded, the odds of the free memory having invalid contents are low with most malloc implementations when not using memory debugging features, but some allocators will definitely overwrite the memory there, leading to a likely crash.
* Fix CVE-2011-4028: File disclosure vulnerability. upstream xorg/xserver ↵Mike DePaulo2015-02-141-1/+1
| | | | | | | | commit 6ba44b91e37622ef8c146d8f2ac92d708a18ed34 use O_NOFOLLOW to open the existing lock file, so symbolic links aren't followed, thus avoid revealing if it point to an existing file.
* LZW decompress: fix for CVE-2011-2895 From xorg/lib/Xfont commit ↵Mike DePaulo2015-02-141-0/+2
| | | | | | | | d11ee5886e9d9ec610051a206b135a4cdc1e09a0 Specially crafted LZW stream can crash an application using libXfont that is used to open untrusted font files. With X server, this may allow privilege escalation when exploited
* VERSION file: master VERSION file is in base folder, symlinked from ↵Mike Gabriel2015-02-141-0/+1
| | | | | | | | | | | | | | | | | | nx*/VERSION and hw/nxagent/VERSION. This commit removes the debian/VERSION file at makes it now unnecessary to copy/symlink the VERSION file at build time. These build scripts got adapted: debian/roll-tarballs.sh debian/rules nx-libs.spec Furthermore, all NX component now use the main VERSION file as reference. typechange: nxcomp/VERSION typechange: nxcompext/VERSION typechange: nxcompshad/VERSION typechange: nxproxy/VERSION
* Unbrand NX Agent Startup Screen / Brand X2Go Agent Startup Screen ↵Oleksandr Shneyder2015-02-135-77/+158
| | | | | | | | | | (999_nxagent_unbrand-nxagent-brand-x2goagent.full.patch). When launched with NX Agent flavour, the startup screen gets unbranded by this patch (the !M logo does not get shown). When launched with X2Go Agent flavour, the startup screen gets branded with the X2GO logo.
* Fix several typos in nxcomp.Mike Gabriel2015-02-133-3/+3
| | | | | | Former patch file names: 991_fix-hr-typos.full+lite.patch 991_fix-hr-typos.full.patch
* Several fixes for building debug versions of NX ↵Mihai Moldovan2015-02-134-7/+8
| | | | | | | | | | | | | | | | | | (990_fix-DEBUG-and-TEST-builds.full.patch). (1) In nx-X11/programs/Xserver/dix: Fix several compile errors when specifying -DDEBUG globally. Previous GCC versions were more liberal and the code thus compiled. Also initialize/reset a count variable correctly. (2) In nx-X11/programs/Xserver/hw/nxagent/Render.c: Check for pSrc->pDrawable to exist instead of having nxagent segfault when it does not. This enables the possibility of compiling all nxagent modules in TEST mode.
* Provide build support for aarch64 architecture ↵Orion Poplawski2015-02-134-0/+39
| | | | (606_nx-X11_build-on-aarch64.full.patch).
* Handle some serious compilation warnings ↵Mirraz Mirraz2015-02-133-2/+7
| | | | (603_nx-X11_compilation_warnings.full.patch).
* Be compliant with POS36-C: Observe correct revocation order while ↵Orion Poplawski2015-02-131-0/+7
| | | | | | | | | | | | | | | | relinquishing privileges (602_nx-X11_initgroups.full.patch). The Fedora review of NX (redistributed) caught the following rpmlint issue: This executable is calling setuid and setgid without setgroups or initgroups. There is a high probability this mean it didn't relinquish all groups, and this would be a potential security issue to be fixed. Seek POS36-C on the web for details about the problem. Ref POS36-C: https://www.securecoding.cert.org/confluence/display/seccode/POS36-C.+Observe+correct+revocation+order+while+relinquishing+privileges This patch adds initgroups() calls to the code to initialize the supplemental group list.
* Do not build bundled libraries ↵Orion Poplawski2015-02-133-11/+14
| | | | | | | | | | | | (601_nx-X11_build-option-changes-to-not-use-bundled-libraries.full.patch). This commit has been submitted by Orion in two portions. One was submitted to X2Go BTS and created on Wed, 10 Jul 2013. The other portion has been taken from the Fedora package by Mike Gabriel and worked into this patch on Fri, 06 Dec 2013.
* Unique Library Names Patch ↵Jan Engelhardt2015-02-1328-168/+168
| | | | | | | | | | | | | | | | | | | | (600_nx-X11+nxcompext+nxcompshad_unique-libnames.full.patch). We really want to make use of rpm's automatic dependency finding. Binaries are scanned for DT_NEEDED entries, the latter of which are then used for populating the "Requires"-type deps. The "nxagent" binary for example would require libX11.so.6. That incurs problems: 1. A package manager told to install nxagent could select xorg-x11 rather than nx-libs, even though nxagent depends on the NX version. 2. A package manager told to install $some_program could select nx-libs rather than xorg-x11 (since both provide libX11.so.6), but, since the NX library is in an obscure directory, running $some_program would fail as libX11.so.6 is not found. To solve this, give the NX libraries unique names different from the Xorg ones.
* Adapt paths of keystrokes.cfg if nxagent runs as x2goagent ↵Horst Schirmeier2015-02-131-0/+6
| | | | (321_nxagent_x2go-specific-keystroke-config.full.patch).
* Make nxagent-specific keyboard bindings configurable ↵Alexander Wuerstlein2015-02-136-237/+546
| | | | | | | | | | | | | | (320_nxagent_configurable-keystrokes.full.patch). Replaces the hardcoded nxagent keybindings by a configurable table of keybindings. The default configuration is the same as the original one, to maintain compatibility. A user/administrator can either specify a command line parameter, environment variable or place a file in ~/.nx/config/keystrokes.cfg or /etc/nxagent/keystrokes.cfg to reconfigure these keybindings. The configuration file format is XML, a dependency on libxml2 is added to allow parsing the configuration.
* Test for xkb/rules/base instead of xkb/keymap.dir for setting XkbBaseDir ↵Mike Gabriel2015-02-131-16/+16
| | | | | | | | (302_nx-X11_xkbbasedir-detection.full.patch). In recent (as of 2014/06) X.org release, the keymap.dir file has become obsolete. Let's test for the xkb/rules/base file instead.
* Use shared libraries (301_nx-X11_use-shared-libs.full.patch).Jan Engelhardt2015-02-103-9/+10
| | | | | | | | | | | | Many distributions have a policy to reduce code duplications. One means to avoid such duplications is to use shared libraries instead of using libs that are ofter shipped for convenience. Fedora: http://fedoraproject.org/wiki/Packaging:Guidelines#Shared_Libraries Debian (Section 10.7.4 of Debian policy): http://www.debian.org/doc/debian-policy/ch-files.html
* Set WM_CLASS to X2GoAgent/NXAgent (300_nxagent_set-wm-class.full.patch).Oleksandr Shneyder2015-02-101-0/+36
| | | | | | | | | | | | | | Depending on the binary name of the agent either NXAgent or X2GoAgent is set as WM_Class. This is needed for some window managers (like the one shipped with Maemo) The original WM_CLASS patch has been taken from the FreeNX patch series, author unknown. The nxagent/x2goagent has been done by the X2Go Project, author see below.
* Save session state in file.Oleksandr Shneyder2015-02-105-1/+51
| | | | | | | | | 210_nxagent_save_session_state.full.patch 210_nxcomp_save_session_state.full+lite.patch This patch adds a "state" option to NX (agent) which allows one to specify a file where nxagent will write its session state into.
* Add x2goagent man page (209_x2goagent_add-man-page.full.patch).Mike Gabriel2015-02-101-0/+35
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* Fix XFIXES selection handling (copy and paste via middle mouse button) ↵Ulrich Sibiller2015-02-101-4/+8
| | | | | | | | | | | (207_nxagent_fix-xfixes-selection.full.patch). When nxagent has the XFIXES extension enabled copy and paste from outside applications to applications within the session that rely on XFixesSelectSelectionInput (e.g. qt applications like konsole) did never receive any notifications because the nxagent did not register itself at the real X server to receive them. Fixes X2Go Bug #585 (http://bugs.x2go.org/585).
* Add -clipboard cmdline option to nxagent ↵Mike Gabriel2015-02-101-2/+25
| | | | (206_nxagent_clipboard-as-nxoption.full.patch).
* Fix refresh errors on Win2012 RDP connections with speed=ADS ↵Oleksandr Shneyder2015-02-101-1/+1
| | | | (205_nxagent_refresh-adsl.full.patch).
* Fix repainting of SolidFill pictures with libcairo > 1.12.x ↵Oleksandr Shneyder2015-02-103-5/+16
| | | | (204_nxagent_repaint-solidpict.full.patch).
* Add -norootlessexit cmdline option to nxagent ↵Oleksandr Shneyder2015-02-104-1/+16
| | | | | | | | | | (203_nxagent_disable-rootless-exit.full.patch). This change enables to launch an nxagent in rootless mode that waits forever for Xclients to appear. This feature got added when X2Go introduced Published Applications support.
* Enable Xinerama support for NX (202_nx-X11_enable-xinerama.full.patch).Oleksandr Shneyder2015-02-108-54/+93
| | | | | | | | This patch adds Xinerama awareness to NX agent windows. The advantage of Xinerama awareness is that an NX session window will only maximize to the dimensions of the active physical display.
* X2Go icon when run with x2goagent flavour ↵Oleksandr Shneyder2015-02-103-3/+171
| | | | | | | (201_nxagent_set-x2go-icon-if-x2goagent-flavour.full.patch). Depending on the binary name of the agent either nxagent.xpm or x2go.xpm is used as window icon.
* Detect nxagent/x2goagent flavour ↵Oleksandr Shneyder2015-02-102-0/+30
| | | | | | | | | | (200_nxagent_check-binary-x2go-flavour.full.patch). Whether the agent runs in X2Go or NX mode is decide by the name of the binary that executes the code. Binary name equal to nxagent -> (Free)NX flavour Binary name equal to x2goagent -> X2Go flavour
* Avoid large pixmaps (110_nxagent_createpixmap-bounds-check.full.patch).Mike Gabriel2015-02-101-0/+17
| | | | | | | | | | | | | | | | | It is allowed to try and allocate a pixmap which is larger than 32767 in either dimension. However, all of the framebuffer code is buggy and does not reliably draw to such big pixmaps, basically because the Region data structure operates with signed shorts for the rectangles in it. Furthermore, several places in the X server computes the size in bytes of the pixmap and tries to store it in an integer. This integer can overflow and cause the allocated size to be much smaller. So, such big pixmaps are rejected here with a BadAlloc Originally contributed by FreeNX Team
* Wine Close Delay (108_nxagent_wine-close-delay.full.patch).Mike Gabriel2015-02-101-0/+30
| | | | | | Wine close delay. Originally contributed by FreeNX team (dimbor).
* Prevent sending COMPOUND_TEXT ↵Mike Gabriel2015-02-102-3/+11
| | | | | | | | (107_nxagent_clipboard-compound-text+small-bed-sheets.full.patch). Do not send COMPOUND_TEXT to client. Originally contributed by FreeNX Team (dimbor).
* UTF-8 Clipboard copying (106_nxagent_utf8-copy-clipboard.full.patch).Mike Gabriel2015-02-101-4/+12
| | | | | | Enable UTF-8 clipboard copies. Originally contributed by FreeNX Team (dimbor).
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