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authorMihai Moldovan <ionic@ionic.de>2015-04-26 23:32:32 +0200
committerMihai Moldovan <ionic@ionic.de>2015-04-26 23:34:27 +0200
commit96efadac50bf40bc502680072570a2950f132fe3 (patch)
treeacbd7103b5908636a97060581ba8bed01b5e83fa /debian/patches/1020-dix-integer-overflow-in-GetHosts-CVE-2014-8092-.full.patch
parent79a4ed92dbae5089d3ddfcc0acec427ff057ad9b (diff)
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Rename: - 1001-LZW-decompress-fix-for-CVE-2011-2895-From-xorg-lib-X.patch => 1001-LZW-decompress-fix-for-CVE-2011-2895-From-xorg-.full.patch - 1002-Fix-CVE-2011-4028-File-disclosure-vulnerability.-ups.patch => 1002-Fix-CVE-2011-4028-File-disclosure-vulnerability.full.patch - 1003-Avoid-use-after-free-in-dix-dixfonts.c-doImageText-C.patch => 1003-Avoid-use-after-free-in-dix-dixfonts.c-doImageT.full.patch - 1004-CVE-2013-6462-unlimited-sscanf-overflows-stack-buffe.patch => 1004-CVE-2013-6462-unlimited-sscanf-overflows-stack-.full.patch - 1005-CVE-2014-0209-integer-overflow-of-realloc-size-in-Fo.patch => 1005-CVE-2014-0209-integer-overflow-of-realloc-size-.full.patch - 1006-CVE-2014-0209-integer-overflow-of-realloc-size-in-le.patch => 1006-CVE-2014-0209-integer-overflow-of-realloc-size-.full.patch - 1007-CVE-2014-0210-unvalidated-length-in-_fs_recv_conn_se.patch => 1007-CVE-2014-0210-unvalidated-length-in-_fs_recv_co.full.patch - 1008-Don-t-crash-when-we-receive-an-FS_Error-from-the-fon.patch => 1008-Don-t-crash-when-we-receive-an-FS_Error-from-th.full.patch - 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1025-xcmisc-unvalidated-length-in-SProcXCMiscGetXIDList-C.patch => 1025-xcmisc-unvalidated-length-in-SProcXCMiscGetXIDL.full.patch - 1026-Xv-unvalidated-lengths-in-XVideo-extension-swapped-p.patch => 1026-Xv-unvalidated-lengths-in-XVideo-extension-swap.full.patch - 1027-render-check-request-size-before-reading-it-CVE-2014.patch => 1027-render-check-request-size-before-reading-it-CVE.full.patch - 1028-render-unvalidated-lengths-in-Render-extn.-swapped-p.patch => 1028-render-unvalidated-lengths-in-Render-extn.-swap.full.patch - 1029-xfixes-unvalidated-length-in-SProcXFixesSelectSelect.patch => 1029-xfixes-unvalidated-length-in-SProcXFixesSelectS.full.patch - 1030-randr-unvalidated-lengths-in-RandR-extension-swapped.patch => 1030-randr-unvalidated-lengths-in-RandR-extension-sw.full.patch - 1031-glx-Be-more-paranoid-about-variable-length-requests-.patch => 1031-glx-Be-more-paranoid-about-variable-length-requ.full.patch - 1032-glx-Be-more-strict-about-rejecting-invalid-image-siz.patch => 1032-glx-Be-more-strict-about-rejecting-invalid-imag.full.patch - 1033-glx-Additional-paranoia-in-__glXGetAnswerBuffer-__GL.patch => 1033-glx-Additional-paranoia-in-__glXGetAnswerBuffer.full.patch - 1034-glx-Add-safe_-add-mul-pad-v3-CVE-2014-8093-4-6-v4.patch => 1034-glx-Add-safe_-add-mul-pad-v3-CVE-2014-8093-4-6-.full.patch - 1035-glx-Length-checking-for-GLXRender-requests-v2-CVE-20.patch => 1035-glx-Length-checking-for-GLXRender-requests-v2-C.full.patch - 1036-glx-Integer-overflow-protection-for-non-generated-re.patch => 1036-glx-Integer-overflow-protection-for-non-generat.full.patch - 1037-glx-Top-level-length-checking-for-swapped-VendorPriv.patch => 1037-glx-Top-level-length-checking-for-swapped-Vendo.full.patch - 1038-glx-Length-checking-for-non-generated-single-request.patch => 1038-glx-Length-checking-for-non-generated-single-re.full.patch - 1039-glx-Length-checking-for-RenderLarge-requests-v2-CVE-.patch => 1039-glx-Length-checking-for-RenderLarge-requests-v2.full.patch - 1040-glx-Pass-remaining-request-length-into-varsize-v2-CV.patch => 1040-glx-Pass-remaining-request-length-into-varsize-.full.patch - 1041-nx-X11-lib-font-fc-fserve.c-initialize-remaining-buf.patch => 1041-nx-X11-lib-font-fc-fserve.c-initialize-remainin.full.patch - 1042-Do-proper-input-validation-to-fix-for-CVE-2011-2895.patch => 1042-Do-proper-input-validation-to-fix-for-CVE-2011-.full.patch - 1101-Coverity-844-845-846-Fix-memory-leaks.patch => 1101-Coverity-844-845-846-Fix-memory-leaks.full.patch - 1102-include-introduce-byte-counting-functions.patch => 1102-include-introduce-byte-counting-functions.full.patch - 1103-xkb-Don-t-swap-XkbSetGeometry-data-in-the-input-buff.patch => 1103-xkb-Don-t-swap-XkbSetGeometry-data-in-the-input.full.patch - 1104-xkb-Check-strings-length-against-request-size.patch => 1104-xkb-Check-strings-length-against-request-size.full.patch
Diffstat (limited to 'debian/patches/1020-dix-integer-overflow-in-GetHosts-CVE-2014-8092-.full.patch')
-rw-r--r--debian/patches/1020-dix-integer-overflow-in-GetHosts-CVE-2014-8092-.full.patch54
1 files changed, 54 insertions, 0 deletions
diff --git a/debian/patches/1020-dix-integer-overflow-in-GetHosts-CVE-2014-8092-.full.patch b/debian/patches/1020-dix-integer-overflow-in-GetHosts-CVE-2014-8092-.full.patch
new file mode 100644
index 000000000..1d880399f
--- /dev/null
+++ b/debian/patches/1020-dix-integer-overflow-in-GetHosts-CVE-2014-8092-.full.patch
@@ -0,0 +1,54 @@
+From b6b5b14e4190048fadbfbcf063d873d318127e81 Mon Sep 17 00:00:00 2001
+From: Alan Coopersmith <alan.coopersmith@oracle.com>
+Date: Mon, 6 Jan 2014 23:30:14 -0800
+Subject: [PATCH 20/40] dix: integer overflow in GetHosts() [CVE-2014-8092 2/4]
+
+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)
+v3: human-readable version of "1 MB" (Mihai Moldovan)
+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
+---
+ nx-X11/programs/Xserver/os/access.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/nx-X11/programs/Xserver/os/access.c b/nx-X11/programs/Xserver/os/access.c
+index b6a70a7..532a2f8 100644
+--- a/nx-X11/programs/Xserver/os/access.c
++++ b/nx-X11/programs/Xserver/os/access.c
+@@ -1719,6 +1719,10 @@ GetHosts (
+ {
+ nHosts++;
+ n += (((host->len + 3) >> 2) << 2) + sizeof(xHostEntry);
++ /* Could check for INT_MAX, but in reality having more than 1mb of
++ hostnames in the access list is ridiculous */
++ if (n >= 1024*1024)
++ break;
+ }
+ if (n)
+ {
+@@ -1730,6 +1734,8 @@ GetHosts (
+ for (host = validhosts; host; host = host->next)
+ {
+ len = host->len;
++ if ((ptr + sizeof(xHostEntry) + len) > (data + n))
++ break;
+ ((xHostEntry *)ptr)->family = host->family;
+ ((xHostEntry *)ptr)->length = len;
+ ptr += sizeof(xHostEntry);
+--
+2.1.4
+