libxml2: add several security patches

Fixes:
CVE-2015-1819 - The xmlreader in libxml allows remote attackers to cause
a denial of service (memory consumption) via crafted XML data, related
to an XML Entity Expansion (XEE) attack.
CVE-2015-7941 - out-of-bounds memory access.
CVE-2015-7942 - heap-buffer-overflow in xmlParseConditionalSections.
CVE-2015-8035 - DoS via crafted xz file.

All patches upstream.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/package/libxml2/0008-fix-CVE-2015-8035.patch b/package/libxml2/0008-fix-CVE-2015-8035.patch
new file mode 100644
index 0000000000..6673f3e2fe
--- /dev/null
+++ b/package/libxml2/0008-fix-CVE-2015-8035.patch
@@ -0,0 +1,33 @@
+From f0709e3ca8f8947f2d91ed34e92e38a4c23eae63 Mon Sep 17 00:00:00 2001
+From: Daniel Veillard <veillard@redhat.com>
+Date: Tue, 3 Nov 2015 15:31:25 +0800
+Subject: CVE-2015-8035 Fix XZ compression support loop
+
+For https://bugzilla.gnome.org/show_bug.cgi?id=757466
+DoS when parsing specially crafted XML document if XZ support
+is compiled in (which wasn't the case for 2.9.2 and master since
+Nov 2013, fixed in next commit !)
+
+Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
+---
+ xzlib.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/xzlib.c b/xzlib.c
+index 0dcb9f4..1fab546 100644
+--- a/xzlib.c
++++ b/xzlib.c
+@@ -581,6 +581,10 @@ xz_decomp(xz_statep state)
+             xz_error(state, LZMA_DATA_ERROR, "compressed data error");
+             return -1;
+         }
++        if (ret == LZMA_PROG_ERROR) {
++            xz_error(state, LZMA_PROG_ERROR, "compression error");
++            return -1;
++        }
+     } while (strm->avail_out && ret != LZMA_STREAM_END);
+ 
+     /* update available output and crc check value */
+-- 
+cgit v0.11.2
+