diff options
Diffstat (limited to 'gnu/packages/patches/expat-CVE-2015-1283.patch')
-rw-r--r-- | gnu/packages/patches/expat-CVE-2015-1283.patch | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/gnu/packages/patches/expat-CVE-2015-1283.patch b/gnu/packages/patches/expat-CVE-2015-1283.patch deleted file mode 100644 index f9065bea16..0000000000 --- a/gnu/packages/patches/expat-CVE-2015-1283.patch +++ /dev/null @@ -1,89 +0,0 @@ -Copied from Debian. - -Description: fix multiple integer overflows in the XML_GetBuffer function - Multiple integer overflows in the XML_GetBuffer function in Expat through - 2.1.0, as used in Google Chrome before 44.0.2403.89 and other products, - allow remote attackers to cause a denial of service (heap-based buffer - overflow) or possibly have unspecified other impact via crafted XML data, - a related issue to CVE-2015-2716. -Origin: Mozilla, https://hg.mozilla.org/releases/mozilla-esr31/rev/2f3e78643f5c -Author: Eric Rahm <erahm@mozilla.com> -Forwarded: not-needed -Last-Update: 2015-07-24 - -diff --git a/lib/xmlparse.c b/lib/xmlparse.c ---- a/lib/xmlparse.c -+++ b/lib/xmlparse.c -@@ -1673,29 +1673,40 @@ XML_ParseBuffer(XML_Parser parser, int l - XmlUpdatePosition(encoding, positionPtr, bufferPtr, &position); - positionPtr = bufferPtr; - return result; - } - - void * XMLCALL - XML_GetBuffer(XML_Parser parser, int len) - { -+/* BEGIN MOZILLA CHANGE (sanity check len) */ -+ if (len < 0) { -+ errorCode = XML_ERROR_NO_MEMORY; -+ return NULL; -+ } -+/* END MOZILLA CHANGE */ - switch (ps_parsing) { - case XML_SUSPENDED: - errorCode = XML_ERROR_SUSPENDED; - return NULL; - case XML_FINISHED: - errorCode = XML_ERROR_FINISHED; - return NULL; - default: ; - } - - if (len > bufferLim - bufferEnd) { -- /* FIXME avoid integer overflow */ - int neededSize = len + (int)(bufferEnd - bufferPtr); -+/* BEGIN MOZILLA CHANGE (sanity check neededSize) */ -+ if (neededSize < 0) { -+ errorCode = XML_ERROR_NO_MEMORY; -+ return NULL; -+ } -+/* END MOZILLA CHANGE */ - #ifdef XML_CONTEXT_BYTES - int keep = (int)(bufferPtr - buffer); - - if (keep > XML_CONTEXT_BYTES) - keep = XML_CONTEXT_BYTES; - neededSize += keep; - #endif /* defined XML_CONTEXT_BYTES */ - if (neededSize <= bufferLim - buffer) { -@@ -1714,17 +1725,25 @@ XML_GetBuffer(XML_Parser parser, int len - } - else { - char *newBuf; - int bufferSize = (int)(bufferLim - bufferPtr); - if (bufferSize == 0) - bufferSize = INIT_BUFFER_SIZE; - do { - bufferSize *= 2; -- } while (bufferSize < neededSize); -+/* BEGIN MOZILLA CHANGE (prevent infinite loop on overflow) */ -+ } while (bufferSize < neededSize && bufferSize > 0); -+/* END MOZILLA CHANGE */ -+/* BEGIN MOZILLA CHANGE (sanity check bufferSize) */ -+ if (bufferSize <= 0) { -+ errorCode = XML_ERROR_NO_MEMORY; -+ return NULL; -+ } -+/* END MOZILLA CHANGE */ - newBuf = (char *)MALLOC(bufferSize); - if (newBuf == 0) { - errorCode = XML_ERROR_NO_MEMORY; - return NULL; - } - bufferLim = newBuf + bufferSize; - #ifdef XML_CONTEXT_BYTES - if (bufferPtr) { - - - - |