Package: tetex-bin Version: 2.0.2-26 Severity: critical Tags: security Hi all,
As recently discovered the patch, which fixed CAN-2004-0888, seems to be broken on all 64bit platforms (tested only on ia64 though).[1] Attched are two patches, which should fix that. They are simply stolen from the RedHat BTS.[2] H. [1] e.g.: http://www.auscert.org.au/render.html?it=4887 [2] https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=135393 -- sigmentation fault
@@ -186,6 +192,11 @@
}
if (start >= pagesSize) {
pagesSize += 32;
+ if (pagesSize*(int)sizeof(Page *)/sizeof(Page *) != pagesSize ||
+ pagesSize*(int)sizeof(Ref)/sizeof(Ref) != pagesSize) {
+ error(-1, "Invalid 'pagesSize' parameter.");
+ goto err3;
+ }
--- 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*(int)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*(int)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*(int)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*(int)sizeof(int)/sizeof(int) != streamEndsSize) {
+ error(-1, "Invalid 'endstream' parameter.");
+ return gFalse;
+ }
+
streamEnds = (Guint *)grealloc(streamEnds,
streamEndsSize * sizeof(int));
}
--- Catalog.cc.orig 2004-09-18 00:14:15.000000000 -0700
+++ Catalog.cc 2004-09-25 18:19:55.000000000 -0700
@@ -63,6 +63,12 @@
}
pagesSize = numPages0 = obj.getInt();
obj.free();
+ if (pagesSize*(int)sizeof(Page *)/sizeof(Page *) != pagesSize ||
+ pagesSize*(int)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) {
@@ -190,6 +196,10 @@
}
if (start >= pagesSize) {
pagesSize += 32;
+ if (pagesSize*(int)sizeof(Page *)/sizeof(Page *) != 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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