Slackware 13.37slackware-13.37

Mon Apr 25 13:37:00 UTC 2011
Slackware 13.37 x86_64 stable is released!

Thanks to everyone who pitched in on this release: the Slackware team,
the folks producing upstream code, and linuxquestions.org for providing
a great forum for collaboration and testing.

The ISOs are off to be replicated, a 6 CD-ROM 32-bit set and a
dual-sided
32-bit/64-bit x86/x86_64 DVD.  Please consider supporting the Slackware
project by picking up a copy from store.slackware.com.  We're taking
pre-orders now, and offer a discount if you sign up for a subscription.

As always, thanks to the Slackware community for testing, suggestions,
and feedback.  :-)

Have fun!

3 files changed, 85 insertions, 2 deletions

diff --git a/source/l/libtiff/libtiff-CVE-2011-0192.patch b/source/l/libtiff/libtiff-CVE-2011-0192.patch
new file mode 100644
index 000000000..892f70e01
--- /dev/null
+++ b/source/l/libtiff/libtiff-CVE-2011-0192.patch
@@ -0,0 +1,27 @@
+Protect against a fax VL(n) codeword commanding a move left.  Without
+this, a malicious input file can generate an indefinitely large series
+of runs without a0 ever reaching the right margin, thus overrunning
+our buffer of run lengths.  Per CVE-2011-0192.  This is a modified
+version of a patch proposed by Drew Yao of Apple Product Security.
+It adds an unexpected() report, and disallows the equality case except
+for the first run of a line, since emitting a run without increasing a0
+still allows buffer overrun.  (We have to allow it for the first run to
+cover the case of encoding a zero-length run at start of line using VL.)
+
+
+diff -Naur tiff-3.9.4.orig/libtiff/tif_fax3.h tiff-3.9.4/libtiff/tif_fax3.h
+--- tiff-3.9.4.orig/libtiff/tif_fax3.h	2010-06-08 14:50:42.000000000 -0400
++++ tiff-3.9.4/libtiff/tif_fax3.h	2011-03-10 12:11:20.850839162 -0500
+@@ -478,6 +478,12 @@
+ 	    break;							\
+ 	case S_VL:							\
+ 	    CHECK_b1;							\
++	    if (b1 <= (int) (a0 + TabEnt->Param)) {			\
++		if (b1 < (int) (a0 + TabEnt->Param) || pa != thisrun) {	\
++		    unexpected("VL", a0);				\
++		    goto eol2d;						\
++		}							\
++	    }								\
+ 	    SETVALUE(b1 - a0 - TabEnt->Param);				\
+ 	    b1 -= *--pb;						\
+ 	    break;							\
diff --git a/source/l/libtiff/libtiff-CVE-2011-1167.patch b/source/l/libtiff/libtiff-CVE-2011-1167.patch
new file mode 100644
index 000000000..d3fcf6f64
--- /dev/null
+++ b/source/l/libtiff/libtiff-CVE-2011-1167.patch
@@ -0,0 +1,53 @@
+Upstream patch for CVE-2011-1167, heap-based buffer overflow in thunder
+decoder (ZDI-CAN-1004).
+
+
+diff -Naur tiff-3.9.4.orig/libtiff/tif_thunder.c tiff-3.9.4/libtiff/tif_thunder.c
+--- tiff-3.9.4.orig/libtiff/tif_thunder.c	2010-06-08 14:50:43.000000000 -0400
++++ tiff-3.9.4/libtiff/tif_thunder.c	2011-03-18 12:17:13.635796403 -0400
+@@ -55,12 +55,32 @@
+ static const int twobitdeltas[4] = { 0, 1, 0, -1 };
+ static const int threebitdeltas[8] = { 0, 1, 2, 3, 0, -3, -2, -1 };
+ 
+-#define	SETPIXEL(op, v) { \
+-	lastpixel = (v) & 0xf; \
+-	if (npixels++ & 1) \
+-	    *op++ |= lastpixel; \
+-	else \
++#define	SETPIXEL(op, v) {                     \
++	lastpixel = (v) & 0xf;                \
++        if ( npixels < maxpixels )         \
++        {                                     \
++	  if (npixels++ & 1)                  \
++	    *op++ |= lastpixel;               \
++	  else                                \
+ 	    op[0] = (tidataval_t) (lastpixel << 4); \
++        }                                     \
++}
++
++static int
++ThunderSetupDecode(TIFF* tif)
++{
++	static const char module[] = "ThunderSetupDecode";
++
++        if( tif->tif_dir.td_bitspersample != 4 )
++        {
++                TIFFErrorExt(tif->tif_clientdata, module,
++                             "Wrong bitspersample value (%d), Thunder decoder only supports 4bits per sample.",
++                             (int) tif->tif_dir.td_bitspersample );
++                return 0;
++        }
++        
++
++	return (1);
+ }
+ 
+ static int
+@@ -151,6 +171,7 @@
+ 	(void) scheme;
+ 	tif->tif_decoderow = ThunderDecodeRow;
+ 	tif->tif_decodestrip = ThunderDecodeRow;
++	tif->tif_setupdecode = ThunderSetupDecode;
+ 	return (1);
+ }
+ #endif /* THUNDER_SUPPORT */
diff --git a/source/l/libtiff/libtiff.SlackBuild b/source/l/libtiff/libtiff.SlackBuild
index d2e2556ee..33e871f35 100755
--- a/source/l/libtiff/libtiff.SlackBuild
+++ b/source/l/libtiff/libtiff.SlackBuild
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-# Copyright 2005-2010  Patrick J. Volkerding, Sebeka, Minnesota, USA
+# Copyright 2005-2011  Patrick J. Volkerding, Sebeka, Minnesota, USA
 # All rights reserved.
 #
 # Redistribution and use of this script, with or without modification, is
@@ -21,7 +21,7 @@
 #  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 VERSION=${VERSION:-$(echo tiff-*.tar.?z* | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
-BUILD=1
+BUILD=2
 
 # Automatically determine the architecture we're building on:
 if [ -z "$ARCH" ]; then
@@ -63,6 +63,9 @@ rm -rf tiff-$VERSION
 tar xvf $CWD/tiff-$VERSION.tar.?z* || exit 1
 cd tiff-$VERSION
 
+zcat $CWD/libtiff-CVE-2011-0192.patch.gz | patch -p1 --verbose || exit 1
+zcat $CWD/libtiff-CVE-2011-1167.patch.gz | patch -p1 --verbose || exit 1
+
 chown -R root:root .
 find . \
   \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \