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134 lines
5.0 KiB
134 lines
5.0 KiB
CVE-2011-1552, CVE-2011-1553 and CVE-2011-1554
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Author: Jaroslav Škarvada <jskarvad@redhat.com>
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Origin: http://bugzilla.redhat.com/show_bug.cgi?id=692909
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--- t1lib-5.1.2.orig/lib/type1/lines.c 2007-12-23 09:49:42.000000000 -0600
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+++ t1lib-5.1.2/lib/type1/lines.c 2012-01-17 14:15:08.000000000 -0600
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@@ -67,6 +67,10 @@
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None.
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*/
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+#define BITS (sizeof(LONG)*8)
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+#define HIGHTEST(p) (((p)>>(BITS-2)) != 0) /* includes sign bit */
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+#define TOOBIG(xy) ((xy < 0) ? HIGHTEST(-xy) : HIGHTEST(xy))
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+
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/*
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:h2.StepLine() - Produces Run Ends for a Line After Checks
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@@ -84,6 +88,9 @@
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IfTrace4((LineDebug > 0), ".....StepLine: (%d,%d) to (%d,%d)\n",
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x1, y1, x2, y2);
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+ if ( TOOBIG(x1) || TOOBIG(x2) || TOOBIG(y1) || TOOBIG(y2))
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+ abort("Lines this big not supported", 49);
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+
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dy = y2 - y1;
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/*
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Index: t1lib-5.1.2/lib/type1/objects.c
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===================================================================
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--- t1lib-5.1.2.orig/lib/type1/objects.c 2007-12-23 09:49:42.000000000 -0600
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+++ t1lib-5.1.2/lib/type1/objects.c 2012-01-17 14:15:08.000000000 -0600
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@@ -1137,12 +1137,13 @@
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"Context: out of them", /* 46 */
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"MatrixInvert: can't", /* 47 */
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"xiStub called", /* 48 */
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- "Illegal access type1 abort() message" /* 49 */
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+ "Lines this big not supported", /* 49 */
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+ "Illegal access type1 abort() message" /* 50 */
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};
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- /* no is valid from 1 to 48 */
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- if ( (number<1)||(number>48))
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- number=49;
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+ /* no is valid from 1 to 49 */
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+ if ( (number<1)||(number>49))
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+ number=50;
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return( err_msgs[number-1]);
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}
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Index: t1lib-5.1.2/lib/type1/type1.c
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===================================================================
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--- t1lib-5.1.2.orig/lib/type1/type1.c 2012-01-17 14:13:28.000000000 -0600
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+++ t1lib-5.1.2/lib/type1/type1.c 2012-01-17 14:19:54.000000000 -0600
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@@ -1012,6 +1012,7 @@
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double nextdtana = 0.0; /* tangent of post-delta against horizontal line */
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double nextdtanb = 0.0; /* tangent of post-delta against vertical line */
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+ if (ppoints == NULL || numppoints < 1) Error0v("FindStems: No previous point!\n");
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/* setup default hinted position */
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ppoints[numppoints-1].ax = ppoints[numppoints-1].x;
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@@ -1289,7 +1290,7 @@
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static int DoRead(CodeP)
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int *CodeP;
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{
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- if (strindex >= CharStringP->len) return(FALSE); /* end of string */
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+ if (!CharStringP || strindex >= CharStringP->len) return(FALSE); /* end of string */
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/* We handle the non-documented Adobe convention to use lenIV=-1 to
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suppress charstring encryption. */
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if (blues->lenIV==-1) {
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@@ -1700,7 +1701,7 @@
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long pindex = 0;
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/* compute hinting for previous segment! */
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- if (ppoints == NULL) Error0i("RLineTo: No previous point!\n");
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+ if (ppoints == NULL || numppoints < 2) Error0i("RLineTo: No previous point!\n");
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FindStems( currx, curry, currx-ppoints[numppoints-2].x, curry-ppoints[numppoints-2].y, dx, dy);
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/* Allocate a new path point and pre-setup data */
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@@ -1729,7 +1730,7 @@
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long pindex = 0;
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/* compute hinting for previous point! */
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- if (ppoints == NULL) Error0i("RRCurveTo: No previous point!\n");
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+ if (ppoints == NULL || numppoints < 2) Error0i("RRCurveTo: No previous point!\n");
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FindStems( currx, curry, currx-ppoints[numppoints-2].x, curry-ppoints[numppoints-2].y, dx1, dy1);
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/* Allocate three new path points and pre-setup data */
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@@ -1788,7 +1789,9 @@
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long tmpind;
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double deltax = 0.0;
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double deltay = 0.0;
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-
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+
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+ if (ppoints == NULL || numppoints < 1) Error0i("DoClosePath: No previous point!");
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+
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/* If this ClosePath command together with the starting point of this
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path completes to a segment aligned to a stem, we would miss
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hinting for this point. --> Check and explicitly care for this! */
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@@ -1803,6 +1806,7 @@
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deltax = ppoints[i].x - ppoints[numppoints-1].x;
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deltay = ppoints[i].y - ppoints[numppoints-1].y;
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+ if (ppoints == NULL || numppoints <= i + 1) Error0i("DoClosePath: No previous point!");
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/* save nummppoints and reset to move point */
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tmpind = numppoints;
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numppoints = i + 1;
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@@ -1905,7 +1909,7 @@
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FindStems( currx, curry, 0, 0, dx, dy);
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}
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else {
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- if (ppoints == NULL) Error0i("RMoveTo: No previous point!\n");
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+ if (ppoints == NULL || numppoints < 2) Error0i("RMoveTo: No previous point!\n");
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FindStems( currx, curry, ppoints[numppoints-2].x, ppoints[numppoints-2].y, dx, dy);
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}
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@@ -2155,6 +2159,7 @@
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DOUBLE cx, cy;
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DOUBLE ex, ey;
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+ if (ppoints == NULL || numppoints < 8) Error0v("FlxProc: No previous point!");
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/* Our PPOINT list now contains 7 moveto commands which
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are about to be consumed by the Flex mechanism. --> Remove these
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@@ -2324,6 +2329,7 @@
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/* Returns currentpoint on stack */
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static void FlxProc2()
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{
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+ if (ppoints == NULL || numppoints < 1) Error0v("FlxProc2: No previous point!");
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/* Push CurrentPoint on fake PostScript stack */
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PSFakePush( ppoints[numppoints-1].x);
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PSFakePush( ppoints[numppoints-1].y);
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