gnu: libxml2: Fix CVE-2016-5131.
* gnu/packages/patches/libxml2-CVE-2016-5131.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/xml.scm (libxml2/fixed)[source]: Add it.
This commit is contained in:
Leo Famulari
parent
0c83c6bf26
commit
3a2bcac6bd
|
|
@ -697,6 +697,7 @@ dist_patch_DATA = \
|
|||
%D%/packages/patches/libwmf-CVE-2015-4695.patch \
|
||||
%D%/packages/patches/libwmf-CVE-2015-4696.patch \
|
||||
%D%/packages/patches/libxml2-CVE-2016-4658.patch \
|
||||
%D%/packages/patches/libxml2-CVE-2016-5131.patch \
|
||||
%D%/packages/patches/libxslt-generated-ids.patch \
|
||||
%D%/packages/patches/libxslt-CVE-2016-4738.patch \
|
||||
%D%/packages/patches/linux-pam-no-setfsuid.patch \
|
||||
|
|
|
|||
|
|
@ -0,0 +1,218 @@
|
|||
Fix CVE-2016-5131:
|
||||
|
||||
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5131
|
||||
|
||||
Patches copied from upstream source repository (the test suite fails
|
||||
without the 2nd patch):
|
||||
|
||||
https://git.gnome.org/browse/libxml2/commit/?id=9ab01a277d71f54d3143c2cf333c5c2e9aaedd9e
|
||||
https://git.gnome.org/browse/libxml2/commit/?id=a005199330b86dada19d162cae15ef9bdcb6baa8
|
||||
|
||||
From 9ab01a277d71f54d3143c2cf333c5c2e9aaedd9e Mon Sep 17 00:00:00 2001
|
||||
From: Nick Wellnhofer <wellnhofer@aevum.de>
|
||||
Date: Tue, 28 Jun 2016 14:22:23 +0200
|
||||
Subject: [PATCH] Fix XPointer paths beginning with range-to
|
||||
|
||||
The old code would invoke the broken xmlXPtrRangeToFunction. range-to
|
||||
isn't really a function but a special kind of location step. Remove
|
||||
this function and always handle range-to in the XPath code.
|
||||
|
||||
The old xmlXPtrRangeToFunction could also be abused to trigger a
|
||||
use-after-free error with the potential for remote code execution.
|
||||
|
||||
Found with afl-fuzz.
|
||||
|
||||
Fixes CVE-2016-5131.
|
||||
---
|
||||
result/XPath/xptr/vidbase | 13 ++++++++
|
||||
test/XPath/xptr/vidbase | 1 +
|
||||
xpath.c | 7 ++++-
|
||||
xpointer.c | 76 ++++-------------------------------------------
|
||||
4 files changed, 26 insertions(+), 71 deletions(-)
|
||||
|
||||
diff --git a/result/XPath/xptr/vidbase b/result/XPath/xptr/vidbase
|
||||
index 8b9e92d6..f19193e7 100644
|
||||
--- a/result/XPath/xptr/vidbase
|
||||
+++ b/result/XPath/xptr/vidbase
|
||||
@@ -17,3 +17,16 @@ Object is a Location Set:
|
||||
To node
|
||||
ELEMENT p
|
||||
|
||||
+
|
||||
+========================
|
||||
+Expression: xpointer(range-to(id('chapter2')))
|
||||
+Object is a Location Set:
|
||||
+1 : Object is a range :
|
||||
+ From node
|
||||
+ /
|
||||
+ To node
|
||||
+ ELEMENT chapter
|
||||
+ ATTRIBUTE id
|
||||
+ TEXT
|
||||
+ content=chapter2
|
||||
+
|
||||
diff --git a/test/XPath/xptr/vidbase b/test/XPath/xptr/vidbase
|
||||
index b1463830..884b1065 100644
|
||||
--- a/test/XPath/xptr/vidbase
|
||||
+++ b/test/XPath/xptr/vidbase
|
||||
@@ -1,2 +1,3 @@
|
||||
xpointer(id('chapter1')/p)
|
||||
xpointer(id('chapter1')/p[1]/range-to(following-sibling::p[2]))
|
||||
+xpointer(range-to(id('chapter2')))
|
||||
diff --git a/xpath.c b/xpath.c
|
||||
index d992841e..5a01b1b3 100644
|
||||
--- a/xpath.c
|
||||
+++ b/xpath.c
|
||||
@@ -10691,13 +10691,18 @@ xmlXPathCompPathExpr(xmlXPathParserContextPtr ctxt) {
|
||||
lc = 1;
|
||||
break;
|
||||
} else if ((NXT(len) == '(')) {
|
||||
- /* Note Type or Function */
|
||||
+ /* Node Type or Function */
|
||||
if (xmlXPathIsNodeType(name)) {
|
||||
#ifdef DEBUG_STEP
|
||||
xmlGenericError(xmlGenericErrorContext,
|
||||
"PathExpr: Type search\n");
|
||||
#endif
|
||||
lc = 1;
|
||||
+#ifdef LIBXML_XPTR_ENABLED
|
||||
+ } else if (ctxt->xptr &&
|
||||
+ xmlStrEqual(name, BAD_CAST "range-to")) {
|
||||
+ lc = 1;
|
||||
+#endif
|
||||
} else {
|
||||
#ifdef DEBUG_STEP
|
||||
xmlGenericError(xmlGenericErrorContext,
|
||||
diff --git a/xpointer.c b/xpointer.c
|
||||
index 676c5105..d74174a3 100644
|
||||
--- a/xpointer.c
|
||||
+++ b/xpointer.c
|
||||
@@ -1332,8 +1332,6 @@ xmlXPtrNewContext(xmlDocPtr doc, xmlNodePtr here, xmlNodePtr origin) {
|
||||
ret->here = here;
|
||||
ret->origin = origin;
|
||||
|
||||
- xmlXPathRegisterFunc(ret, (xmlChar *)"range-to",
|
||||
- xmlXPtrRangeToFunction);
|
||||
xmlXPathRegisterFunc(ret, (xmlChar *)"range",
|
||||
xmlXPtrRangeFunction);
|
||||
xmlXPathRegisterFunc(ret, (xmlChar *)"range-inside",
|
||||
@@ -2243,76 +2241,14 @@ xmlXPtrRangeInsideFunction(xmlXPathParserContextPtr ctxt, int nargs) {
|
||||
* @nargs: the number of args
|
||||
*
|
||||
* Implement the range-to() XPointer function
|
||||
+ *
|
||||
+ * Obsolete. range-to is not a real function but a special type of location
|
||||
+ * step which is handled in xpath.c.
|
||||
*/
|
||||
void
|
||||
-xmlXPtrRangeToFunction(xmlXPathParserContextPtr ctxt, int nargs) {
|
||||
- xmlXPathObjectPtr range;
|
||||
- const xmlChar *cur;
|
||||
- xmlXPathObjectPtr res, obj;
|
||||
- xmlXPathObjectPtr tmp;
|
||||
- xmlLocationSetPtr newset = NULL;
|
||||
- xmlNodeSetPtr oldset;
|
||||
- int i;
|
||||
-
|
||||
- if (ctxt == NULL) return;
|
||||
- CHECK_ARITY(1);
|
||||
- /*
|
||||
- * Save the expression pointer since we will have to evaluate
|
||||
- * it multiple times. Initialize the new set.
|
||||
- */
|
||||
- CHECK_TYPE(XPATH_NODESET);
|
||||
- obj = valuePop(ctxt);
|
||||
- oldset = obj->nodesetval;
|
||||
- ctxt->context->node = NULL;
|
||||
-
|
||||
- cur = ctxt->cur;
|
||||
- newset = xmlXPtrLocationSetCreate(NULL);
|
||||
-
|
||||
- for (i = 0; i < oldset->nodeNr; i++) {
|
||||
- ctxt->cur = cur;
|
||||
-
|
||||
- /*
|
||||
- * Run the evaluation with a node list made of a single item
|
||||
- * in the nodeset.
|
||||
- */
|
||||
- ctxt->context->node = oldset->nodeTab[i];
|
||||
- tmp = xmlXPathNewNodeSet(ctxt->context->node);
|
||||
- valuePush(ctxt, tmp);
|
||||
-
|
||||
- xmlXPathEvalExpr(ctxt);
|
||||
- CHECK_ERROR;
|
||||
-
|
||||
- /*
|
||||
- * The result of the evaluation need to be tested to
|
||||
- * decided whether the filter succeeded or not
|
||||
- */
|
||||
- res = valuePop(ctxt);
|
||||
- range = xmlXPtrNewRangeNodeObject(oldset->nodeTab[i], res);
|
||||
- if (range != NULL) {
|
||||
- xmlXPtrLocationSetAdd(newset, range);
|
||||
- }
|
||||
-
|
||||
- /*
|
||||
- * Cleanup
|
||||
- */
|
||||
- if (res != NULL)
|
||||
- xmlXPathFreeObject(res);
|
||||
- if (ctxt->value == tmp) {
|
||||
- res = valuePop(ctxt);
|
||||
- xmlXPathFreeObject(res);
|
||||
- }
|
||||
-
|
||||
- ctxt->context->node = NULL;
|
||||
- }
|
||||
-
|
||||
- /*
|
||||
- * The result is used as the new evaluation set.
|
||||
- */
|
||||
- xmlXPathFreeObject(obj);
|
||||
- ctxt->context->node = NULL;
|
||||
- ctxt->context->contextSize = -1;
|
||||
- ctxt->context->proximityPosition = -1;
|
||||
- valuePush(ctxt, xmlXPtrWrapLocationSet(newset));
|
||||
+xmlXPtrRangeToFunction(xmlXPathParserContextPtr ctxt,
|
||||
+ int nargs ATTRIBUTE_UNUSED) {
|
||||
+ XP_ERROR(XPATH_EXPR_ERROR);
|
||||
}
|
||||
|
||||
/**
|
||||
--
|
||||
2.11.0
|
||||
|
||||
From a005199330b86dada19d162cae15ef9bdcb6baa8 Mon Sep 17 00:00:00 2001
|
||||
From: Nick Wellnhofer <wellnhofer@aevum.de>
|
||||
Date: Tue, 28 Jun 2016 14:19:58 +0200
|
||||
Subject: [PATCH] Fix comparison with root node in xmlXPathCmpNodes
|
||||
|
||||
This change has already been made in xmlXPathCmpNodesExt but not in
|
||||
xmlXPathCmpNodes.
|
||||
---
|
||||
xpath.c | 4 ++--
|
||||
1 file changed, 2 insertions(+), 2 deletions(-)
|
||||
|
||||
diff --git a/xpath.c b/xpath.c
|
||||
index 751665b8..d992841e 100644
|
||||
--- a/xpath.c
|
||||
+++ b/xpath.c
|
||||
@@ -3342,13 +3342,13 @@ xmlXPathCmpNodes(xmlNodePtr node1, xmlNodePtr node2) {
|
||||
* compute depth to root
|
||||
*/
|
||||
for (depth2 = 0, cur = node2;cur->parent != NULL;cur = cur->parent) {
|
||||
- if (cur == node1)
|
||||
+ if (cur->parent == node1)
|
||||
return(1);
|
||||
depth2++;
|
||||
}
|
||||
root = cur;
|
||||
for (depth1 = 0, cur = node1;cur->parent != NULL;cur = cur->parent) {
|
||||
- if (cur == node2)
|
||||
+ if (cur->parent == node2)
|
||||
return(-1);
|
||||
depth1++;
|
||||
}
|
||||
--
|
||||
2.11.0
|
||||
|
||||
|
|
@ -108,7 +108,8 @@ project (but it is usable outside of the Gnome platform).")
|
|||
(source
|
||||
(origin
|
||||
(inherit (package-source libxml2))
|
||||
(patches (search-patches "libxml2-CVE-2016-4658.patch"))))))
|
||||
(patches (search-patches "libxml2-CVE-2016-4658.patch"
|
||||
"libxml2-CVE-2016-5131.patch"))))))
|
||||
|
||||
(define-public python-libxml2
|
||||
(package (inherit libxml2)
|
||||
|
|
|
|||
Loading…
Reference in New Issue