summary refs log tree commit diff
path: root/gnu/packages/patches/libxslt-CVE-2015-7995.patch
blob: f291d5b3876c35a49602a11f593e7853a285f01b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
From 7ca19df892ca22d9314e95d59ce2abdeff46b617 Mon Sep 17 00:00:00 2001
From: Daniel Veillard <veillard@redhat.com>
Date: Thu, 29 Oct 2015 19:33:23 +0800
Subject: [PATCH] Fix for type confusion in preprocessing attributes

CVE-2015-7995 http://www.openwall.com/lists/oss-security/2015/10/27/10
We need to check that the parent node is an element before dereferencing
its namespace
---
 libxslt/preproc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libxslt/preproc.c b/libxslt/preproc.c
index 0eb80a0..7f69325 100644
--- a/libxslt/preproc.c
+++ b/libxslt/preproc.c
@@ -2249,7 +2249,8 @@ xsltStylePreCompute(xsltStylesheetPtr style, xmlNodePtr inst) {
 	} else if (IS_XSLT_NAME(inst, "attribute")) {
 	    xmlNodePtr parent = inst->parent;
 
-	    if ((parent == NULL) || (parent->ns == NULL) ||
+	    if ((parent == NULL) ||
+	        (parent->type != XML_ELEMENT_NODE) || (parent->ns == NULL) ||
 		((parent->ns != inst->ns) &&
 		 (!xmlStrEqual(parent->ns->href, inst->ns->href))) ||
 		(!xmlStrEqual(parent->name, BAD_CAST "attribute-set"))) {
-- 
2.6.3