libxml2: Fix CVEs

CVE: CVE-2017-16932 CVE-2017-5130 CVE-2017-7375 CVE-2017-7376

Libxml2 in the upstream pyro is 2.9.4
CVE-2017-7376: For the stable distribution (stretch), these problems
have been fixed in version 2.9.4+dfsg1-2.2+deb9u1
CVE-2017-7375: stretch (security) 2.9.4+dfsg1-2.2+deb9u2

Reference:
CVE-2017-16932 https://github.com/GNOME/libxml2/commit/899a5d9f0ed13b8e32449a08a361e0de127dd961
CVE-2017-5130 https://gitlab.gnome.org/GNOME/libxml2/commit/897dffbae322b46b83f99a607d527058a72c51ed
CVE-2017-7375 https://gitlab.gnome.org/GNOME/libxml2/commit/90ccb58242866b0ba3edbef8fe44214a101c2b3e
CVE-2017-7376 https://gitlab.gnome.org/GNOME/libxml2/commit/5dca9eea1bd4263bfa4d037ab2443de1cd730f7e

Change-Id: Icf68eea8e0916be2bc9f3e844f7d38f6fae75300
Signed-off-by: Andreas Wellving <andreas.wellving@enea.com>
Signed-off-by: Adrian Mangeac <adrian.mangeac@enea.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/recipes-core/libxml/libxml2/CVE-2017-7376-Increase-buffer-space-for-port-in-HTTP-redirect-supp.patch b/recipes-core/libxml/libxml2/CVE-2017-7376-Increase-buffer-space-for-port-in-HTTP-redirect-supp.patch
new file mode 100644
index 0000000..aae956d
--- /dev/null
+++ b/recipes-core/libxml/libxml2/CVE-2017-7376-Increase-buffer-space-for-port-in-HTTP-redirect-supp.patch
@@ -0,0 +1,36 @@
+From 5dca9eea1bd4263bfa4d037ab2443de1cd730f7e Mon Sep 17 00:00:00 2001
+From: Daniel Veillard <veillard@redhat.com>
+Date: Fri, 7 Apr 2017 17:13:28 +0200
+Subject: [PATCH] Increase buffer space for port in HTTP redirect support
+
+For https://bugzilla.gnome.org/show_bug.cgi?id=780690
+
+nanohttp.c: the code wrongly assumed a short int port value.
+
+CVE: CVE-2017-7376
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/commit/5dca9eea1bd4263bfa4d037ab2443de1cd730f7e]
+
+Signed-off-by: Andreas Wellving <andreas.wellving@enea.com>
+---
+ nanohttp.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/nanohttp.c b/nanohttp.c
+index e109ad7..373425d 100644
+--- a/nanohttp.c
++++ b/nanohttp.c
+@@ -1423,9 +1423,9 @@ retry:
+     if (ctxt->port != 80) {
+        /* reserve space for ':xxxxx', incl. potential proxy */
+        if (proxy)
+-           blen += 12;
++           blen += 17;
+        else
+-           blen += 6;
++           blen += 11;
+     }
+     bp = (char*)xmlMallocAtomic(blen);
+     if ( bp == NULL ) {
+-- 
+2.7.4
+