git: Security fix CVE-2015-7545

CVE-2015-7545 git: arbitrary code execution via crafted URLs

(From OE-Core rev: 1e0780427bad448c5b3644134b581ecf1d53af84)

Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 112 insertions, 0 deletions

diff --git a/meta/recipes-devtools/git/git-2.5.0/0010-CVE-2015-7545-3.patch b/meta/recipes-devtools/git/git-2.5.0/0010-CVE-2015-7545-3.patch
new file mode 100644
index 0000000000..b6edc9d7c1
--- /dev/null
+++ b/meta/recipes-devtools/git/git-2.5.0/0010-CVE-2015-7545-3.patch
@@ -0,0 +1,112 @@
+From 5088d3b38775f8ac12d7f77636775b16059b67ef Mon Sep 17 00:00:00 2001
+From: Jeff King <peff@peff.net>
+Date: Tue, 22 Sep 2015 18:03:49 -0400
+Subject: [PATCH] transport: refactor protocol whitelist code
+
+The current callers only want to die when their transport is
+prohibited. But future callers want to query the mechanism
+without dying.
+
+Let's break out a few query functions, and also save the
+results in a static list so we don't have to re-parse for
+each query.
+
+Based-on-a-patch-by: Blake Burkhart <bburky@bburky.com>
+Signed-off-by: Jeff King <peff@peff.net>
+Signed-off-by: Junio C Hamano <gitster@pobox.com>
+
+Upstream-Status: Backport
+
+http://archive.ubuntu.com/ubuntu/pool/main/g/git/git_2.5.0-1ubuntu0.1.debian.tar.xz
+
+CVE: CVE-2015-7545 #3
+Singed-off-by: Armin Kuster <akuster@mvista.com>
+
+---
+ transport.c | 38 ++++++++++++++++++++++++++++++--------
+ transport.h | 15 +++++++++++++--
+ 2 files changed, 43 insertions(+), 10 deletions(-)
+
+Index: git-2.5.0/transport.c
+===================================================================
+--- git-2.5.0.orig/transport.c  2015-12-11 12:47:09.547784038 -0500
++++ git-2.5.0/transport.c       2015-12-11 12:47:09.543784009 -0500
+@@ -912,18 +912,40 @@
+        return strchr(url, ':') - url;
+ }
+ 
+-void transport_check_allowed(const char *type)
++static const struct string_list *protocol_whitelist(void)
+ {
+-       struct string_list allowed = STRING_LIST_INIT_DUP;
+-       const char *v = getenv("GIT_ALLOW_PROTOCOL");
++       static int enabled = -1;
++       static struct string_list allowed = STRING_LIST_INIT_DUP;
++
++       if (enabled < 0) {
++               const char *v = getenv("GIT_ALLOW_PROTOCOL");
++               if (v) {
++                       string_list_split(&allowed, v, ':', -1);
++                       string_list_sort(&allowed);
++                       enabled = 1;
++               } else {
++                       enabled = 0;
++               }
++       }
++
++       return enabled ? &allowed : NULL;
++}
+ 
+-       if (!v)
+-               return;
++int is_transport_allowed(const char *type)
++{
++       const struct string_list *allowed = protocol_whitelist();
++       return !allowed || string_list_has_string(allowed, type);
++}
+ 
+-       string_list_split(&allowed, v, ':', -1);
+-       if (!unsorted_string_list_has_string(&allowed, type))
++void transport_check_allowed(const char *type)
++{
++       if (!is_transport_allowed(type))
+                die("transport '%s' not allowed", type);
+-       string_list_clear(&allowed, 0);
++}
++
++int transport_restrict_protocols(void)
++{
++       return !!protocol_whitelist();
+ }
+ 
+ struct transport *transport_get(struct remote *remote, const char *url)
+Index: git-2.5.0/transport.h
+===================================================================
+--- git-2.5.0.orig/transport.h  2015-12-11 12:47:09.547784038 -0500
++++ git-2.5.0/transport.h       2015-12-11 12:47:09.543784009 -0500
+@@ -134,12 +134,23 @@
+ struct transport *transport_get(struct remote *, const char *);
+ 
+ /*
++ * Check whether a transport is allowed by the environment. Type should
++ * generally be the URL scheme, as described in Documentation/git.txt
++ */
++int is_transport_allowed(const char *type);
++
++/*
+  * Check whether a transport is allowed by the environment,
+- * and die otherwise. type should generally be the URL scheme,
+- * as described in Documentation/git.txt
++ * and die otherwise.
+  */
+ void transport_check_allowed(const char *type);
+ 
++/*
++ * Returns true if the user has attempted to turn on protocol
++ * restrictions at all.
++ */
++int transport_restrict_protocols(void);
++
+ /* Transport options which apply to git:// and scp-style URLs */
+ 
+ /* The program to use on the remote side to send a pack */