rsync: backport a patch to fix CVE-2014-8242

(From OE-Core rev: 81d06ef0a566793e644686ec604ad7d46546d2b0)

Signed-off-by: Roy Li <rongqing.li@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 102 insertions, 0 deletions

diff --git a/meta/recipes-devtools/rsync/rsync-3.1.1/rsync.git-eac858085.patch b/meta/recipes-devtools/rsync/rsync-3.1.1/rsync.git-eac858085.patch
new file mode 100644
index 0000000000..1fcac490ae
--- /dev/null
+++ b/meta/recipes-devtools/rsync/rsync-3.1.1/rsync.git-eac858085.patch
@@ -0,0 +1,101 @@
+From eac858085e3ac94ec0ab5061d11f52652c90a869 Mon Sep 17 00:00:00 2001
+From: Wayne Davison <wayned@samba.org>
+Date: Mon, 11 May 2015 12:36:20 -0700
+Subject: [PATCH 1/1] Add compat flag to allow proper seed checksum order.
+ Fixes the equivalent of librsync's CVE-2014-8242 issue.
+
+Upstream-Status: Backport
+
+Signed-off-by: Roy Li <rongqing.li@windriver.com>
+---
+ checksum.c | 17 +++++++++++++----
+ compat.c   |  5 +++++
+ options.c  |  1 +
+ 3 files changed, 19 insertions(+), 4 deletions(-)
+
+diff --git a/checksum.c b/checksum.c
+index a1c2aa2..933b514 100644
+--- a/checksum.c
++++ b/checksum.c
+@@ -23,6 +23,7 @@
+ 
+ extern int checksum_seed;
+ extern int protocol_version;
++extern int proper_seed_order;
+ 
+ /*
+   a simple 32 bit checksum that can be upadted from either end
+@@ -54,10 +55,18 @@ void get_checksum2(char *buf, int32 len, char *sum)
+        if (protocol_version >= 30) {
+                uchar seedbuf[4];
+                md5_begin(&m);
+-               md5_update(&m, (uchar *)buf, len);
+-               if (checksum_seed) {
+-                       SIVALu(seedbuf, 0, checksum_seed);
+-                       md5_update(&m, seedbuf, 4);
++               if (proper_seed_order) {
++                       if (checksum_seed) {
++                               SIVALu(seedbuf, 0, checksum_seed);
++                               md5_update(&m, seedbuf, 4);
++                       }
++                       md5_update(&m, (uchar *)buf, len);
++               } else {
++                       md5_update(&m, (uchar *)buf, len);
++                       if (checksum_seed) {
++                               SIVALu(seedbuf, 0, checksum_seed);
++                               md5_update(&m, seedbuf, 4);
++                       }
+                }
+                md5_result(&m, (uchar *)sum);
+        } else {
+diff --git a/compat.c b/compat.c
+index 2454937..f89d466 100644
+--- a/compat.c
++++ b/compat.c
+@@ -27,6 +27,7 @@ int inc_recurse = 0;
+ int compat_flags = 0;
+ int use_safe_inc_flist = 0;
+ int want_xattr_optim = 0;
++int proper_seed_order = 0;
+ 
+ extern int am_server;
+ extern int am_sender;
+@@ -78,6 +79,7 @@ int filesfrom_convert = 0;
+ #define CF_SYMLINK_ICONV (1<<2)
+ #define CF_SAFE_FLIST   (1<<3)
+ #define CF_AVOID_XATTR_OPTIM (1<<4)
++#define CF_CHKSUM_SEED_FIX (1<<5)
+ 
+ static const char *client_info;
+ 
+@@ -271,12 +273,15 @@ void setup_protocol(int f_out,int f_in)
+                                compat_flags |= CF_SAFE_FLIST;
+                        if (local_server || strchr(client_info, 'x') != NULL)
+                                compat_flags |= CF_AVOID_XATTR_OPTIM;
++                       if (local_server || strchr(client_info, 'C') != NULL)
++                               compat_flags |= CF_CHKSUM_SEED_FIX;
+                        write_byte(f_out, compat_flags);
+                } else
+                        compat_flags = read_byte(f_in);
+                /* The inc_recurse var MUST be set to 0 or 1. */
+                inc_recurse = compat_flags & CF_INC_RECURSE ? 1 : 0;
+                want_xattr_optim = protocol_version >= 31 && !(compat_flags & CF_AVOID_XATTR_OPTIM);
++               proper_seed_order = compat_flags & CF_CHKSUM_SEED_FIX ? 1 : 0;
+                if (am_sender) {
+                        receiver_symlink_times = am_server
+                            ? strchr(client_info, 'L') != NULL
+diff --git a/options.c b/options.c
+index 19c2b7d..4128b59 100644
+--- a/options.c
++++ b/options.c
+@@ -2503,6 +2503,7 @@ void server_options(char **args, int *argc_p)
+ #endif
+                argstr[x++] = 'f'; /* flist I/O-error safety support */
+                argstr[x++] = 'x'; /* xattr hardlink optimization not desired */
++               argstr[x++] = 'C'; /* support checksum seed order fix */
+        }
+ 
+        if (x >= (int)sizeof argstr) { /* Not possible... */
+-- 
+1.9.1
+
diff --git a/meta/recipes-devtools/rsync/rsync_3.1.1.bb b/meta/recipes-devtools/rsync/rsync_3.1.1.bb
index 3a79154511..c74cdda943 100644
--- a/meta/recipes-devtools/rsync/rsync_3.1.1.bb
+++ b/meta/recipes-devtools/rsync/rsync_3.1.1.bb
@@ -3,6 +3,7 @@ require rsync.inc
 
 SRC_URI += "file://acinclude.m4 \
             file://0001-Complain-if-an-inc-recursive-path-is-not-right-for-i.patch \
+            file://rsync.git-eac858085.patch \
 "
 
 SRC_URI[md5sum] = "43bd6676f0b404326eee2d63be3cdcfe"