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25 lines
967 B
Diff
25 lines
967 B
Diff
From 7ca19df892ca22d9314e95d59ce2abdeff46b617 Mon Sep 17 00:00:00 2001
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From: Daniel Veillard <veillard@redhat.com>
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Date: Thu, 29 Oct 2015 19:33:23 +0800
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Subject: [PATCH] Fix for type confusion in preprocessing attributes
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CVE-2015-7995 http://www.openwall.com/lists/oss-security/2015/10/27/10
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We need to check that the parent node is an element before dereferencing
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its namespace
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---
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libxslt/preproc.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/libxslt/preproc.c
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+++ b/libxslt/preproc.c
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@@ -2245,7 +2245,8 @@ xsltStylePreCompute(xsltStylesheetPtr st
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} else if (IS_XSLT_NAME(inst, "attribute")) {
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xmlNodePtr parent = inst->parent;
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- if ((parent == NULL) || (parent->ns == NULL) ||
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+ if ((parent == NULL) ||
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+ (parent->type != XML_ELEMENT_NODE) || (parent->ns == NULL) ||
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((parent->ns != inst->ns) &&
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(!xmlStrEqual(parent->ns->href, inst->ns->href))) ||
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(!xmlStrEqual(parent->name, BAD_CAST "attribute-set"))) {
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