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--- XRef.cc.orig 2004-09-17 23:54:38.000000000 -0700
+++ XRef.cc 2004-09-25 17:59:36.000000000 -0700
@@ -76,6 +76,12 @@
// trailer is ok - read the xref table
} else {
+ if (size*sizeof(XRefEntry)/sizeof(XRefEntry) != size) {
+ error(-1, "Invalid 'size' inside xref table.");
+ ok = gFalse;
+ errCode = errDamaged;
+ return;
+ }
entries = (XRefEntry *)gmalloc(size * sizeof(XRefEntry));
for (i = 0; i < size; ++i) {
entries[i].offset = 0xffffffff;
@@ -267,6 +273,10 @@
// table size
if (first + n > size) {
newSize = size + 256;
+ if (newSize*sizeof(XRefEntry)/sizeof(XRefEntry) != newSize) {
+ error(-1, "Invalid 'newSize'");
+ goto err2;
+ }
entries = (XRefEntry *)grealloc(entries, newSize * sizeof(XRefEntry));
for (i = size; i < newSize; ++i) {
entries[i].offset = 0xffffffff;
@@ -410,6 +420,10 @@
if (!strncmp(p, "obj", 3)) {
if (num >= size) {
newSize = (num + 1 + 255) & ~255;
+ if (newSize*sizeof(XRefEntry)/sizeof(XRefEntry) != newSize) {
+ error(-1, "Invalid 'obj' parameters.");
+ return gFalse;
+ }
entries = (XRefEntry *)
grealloc(entries, newSize * sizeof(XRefEntry));
for (i = size; i < newSize; ++i) {
@@ -431,6 +445,11 @@
} else if (!strncmp(p, "endstream", 9)) {
if (streamEndsLen == streamEndsSize) {
streamEndsSize += 64;
+ if (streamEndsSize*sizeof(int)/sizeof(int) != streamEndsSize) {
+ error(-1, "Invalid 'endstream' parameter.");
+ return gFalse;
+ }
+
streamEnds = (Guint *)grealloc(streamEnds,
streamEndsSize * sizeof(int));
}
--- Catalog.cc.orig 2004-10-18 16:26:39.388666476 +0200
+++ Catalog.cc 2004-10-18 16:27:28.004749073 +0200
@@ -62,6 +62,12 @@
}
pagesSize = numPages0 = obj.getInt();
obj.free();
+ if (pagesSize*sizeof(Page *)/sizeof(Page *) != pagesSize ||
+ pagesSize*sizeof(Ref)/sizeof(Ref) != pagesSize) {
+ error(-1, "Invalid 'pagesSize'");
+ ok = gFalse;
+ return;
+ }
pages = (Page **)gmalloc(pagesSize * sizeof(Page *));
pageRefs = (Ref *)gmalloc(pagesSize * sizeof(Ref));
for (i = 0; i < pagesSize; ++i) {
@@ -186,6 +192,11 @@
}
if (start >= pagesSize) {
pagesSize += 32;
+ if (pagesSize*sizeof(Page *)/sizeof(Page *) != pagesSize ||
+ pagesSize*sizeof(Ref)/sizeof(Ref) != pagesSize) {
+ error(-1, "Invalid 'pagesSize' parameter.");
+ goto err3;
+ }
pages = (Page **)grealloc(pages, pagesSize * sizeof(Page *));
pageRefs = (Ref *)grealloc(pageRefs, pagesSize * sizeof(Ref));
for (j = pagesSize - 32; j < pagesSize; ++j) {
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