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authorArmin Kuster <akuster@mvista.com>2015-12-05 10:54:57 -0800
committerJoshua Lock <joshua.g.lock@intel.com>2016-01-15 15:12:53 +0000
commit4ca806d70cf65a66daab85898bcf5d682bef43d3 (patch)
treeaea1361d7414e6d0ece245f47a3c83377eda8935
parent34379b38919d535cd787bde4493fff61bd17f37a (diff)
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libxml2: security fix CVE-2015-7942
includes: CVE-2015-7942 CVE-2015-7942-2 Signed-off-by: Armin Kuster <akuster@mvista.com> Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
-rw-r--r--meta/recipes-core/libxml/libxml2.inc2
-rw-r--r--meta/recipes-core/libxml/libxml2/CVE-2015-7942-2-Fix-an-error-in-previous-Conditional-section-patch.patch35
-rw-r--r--meta/recipes-core/libxml/libxml2/CVE-2015-7942-Another-variation-of-overflow-in-Conditional-section.patch39
3 files changed, 76 insertions, 0 deletions
diff --git a/meta/recipes-core/libxml/libxml2.inc b/meta/recipes-core/libxml/libxml2.inc
index 180dd66bce..56a99e8b6d 100644
--- a/meta/recipes-core/libxml/libxml2.inc
+++ b/meta/recipes-core/libxml/libxml2.inc
@@ -26,6 +26,8 @@ SRC_URI = "ftp://xmlsoft.org/libxml2/libxml2-${PV}.tar.gz;name=libtar \
file://CVE-2015-7941-1-Stop-parsing-on-entities-boundaries-errors.patch \
file://CVE-2015-7941-2-Cleanup-conditional-section-error-handling.patch \
file://CVE-2015-8317-Fail-parsing-early-on-if-encoding-conversion-failed.patch \
+ file://CVE-2015-7942-Another-variation-of-overflow-in-Conditional-section.patch \
+ file://CVE-2015-7942-2-Fix-an-error-in-previous-Conditional-section-patch.patch \
"
BINCONFIG = "${bindir}/xml2-config"
diff --git a/meta/recipes-core/libxml/libxml2/CVE-2015-7942-2-Fix-an-error-in-previous-Conditional-section-patch.patch b/meta/recipes-core/libxml/libxml2/CVE-2015-7942-2-Fix-an-error-in-previous-Conditional-section-patch.patch
new file mode 100644
index 0000000000..34b60362c3
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/CVE-2015-7942-2-Fix-an-error-in-previous-Conditional-section-patch.patch
@@ -0,0 +1,35 @@
+From 41ac9049a27f52e7a1f3b341f8714149fc88d450 Mon Sep 17 00:00:00 2001
+From: Daniel Veillard <veillard@redhat.com>
+Date: Tue, 27 Oct 2015 10:53:44 +0800
+Subject: [PATCH] Fix an error in previous Conditional section patch
+
+an off by one mistake in the change, led to error on correct
+document where the end of the included entity was exactly
+the end of the conditional section, leading to regtest failure
+
+Upstream-Status: Backport
+
+CVE-2015-7942-2
+
+Signed-off-by: Armin Kuster <akuster@mvista.com>
+
+---
+ parser.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/parser.c b/parser.c
+index b9217ff..d67b300 100644
+--- a/parser.c
++++ b/parser.c
+@@ -6916,7 +6916,7 @@ xmlParseConditionalSections(xmlParserCtxtPtr ctxt) {
+ NULL, NULL);
+ }
+ if ((ctxt-> instate != XML_PARSER_EOF) &&
+- ((ctxt->input->cur + 3) < ctxt->input->end))
++ ((ctxt->input->cur + 3) <= ctxt->input->end))
+ SKIP(3);
+ }
+ }
+--
+2.3.5
+
diff --git a/meta/recipes-core/libxml/libxml2/CVE-2015-7942-Another-variation-of-overflow-in-Conditional-section.patch b/meta/recipes-core/libxml/libxml2/CVE-2015-7942-Another-variation-of-overflow-in-Conditional-section.patch
new file mode 100644
index 0000000000..40082ec07f
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/CVE-2015-7942-Another-variation-of-overflow-in-Conditional-section.patch
@@ -0,0 +1,39 @@
+From bd0526e66a56e75a18da8c15c4750db8f801c52d Mon Sep 17 00:00:00 2001
+From: Daniel Veillard <veillard@redhat.com>
+Date: Fri, 23 Oct 2015 19:02:28 +0800
+Subject: [PATCH] Another variation of overflow in Conditional sections
+
+Which happen after the previous fix to
+https://bugzilla.gnome.org/show_bug.cgi?id=756456
+
+But stopping the parser and exiting we didn't pop the intermediary entities
+and doing the SKIP there applies on an input which may be too small
+
+Upstream-Status: Backport
+
+CVE-2015-7942
+
+Signed-off-by: Armin Kuster <akuster@mvista.com>
+
+---
+ parser.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/parser.c b/parser.c
+index a65e4cc..b9217ff 100644
+--- a/parser.c
++++ b/parser.c
+@@ -6915,7 +6915,9 @@ xmlParseConditionalSections(xmlParserCtxtPtr ctxt) {
+ "All markup of the conditional section is not in the same entity\n",
+ NULL, NULL);
+ }
+- SKIP(3);
++ if ((ctxt-> instate != XML_PARSER_EOF) &&
++ ((ctxt->input->cur + 3) < ctxt->input->end))
++ SKIP(3);
+ }
+ }
+
+--
+2.3.5
+