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authorGravatar Peter Korsgaard <peter@korsgaard.com>2017-03-28 17:18:08 +0200
committerGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2017-03-28 21:43:35 +0200
commit493cedf3af061b90a899826e0c184c2f484414f6 (patch)
tree966a39655c08ec9496cf93a7722b45d88bc4c59c
parentc5fa9308ea4e3810a7f7d9d0df75cbf090c414c4 (diff)
downloadbuildroot-493cedf3af061b90a899826e0c184c2f484414f6.tar.gz
buildroot-493cedf3af061b90a899826e0c184c2f484414f6.tar.bz2
samba4: security bump to version 4.5.7
Fixes CVE-2017-2619: All versions of Samba prior to 4.6.1, 4.5.7, 4.4.11 are vulnerable to a malicious client using a symlink race to allow access to areas of the server file system not exported under the share definition. Samba uses the realpath() system call to ensure when a client requests access to a pathname that it is under the exported share path on the server file system. Clients that have write access to the exported part of the file system via SMB1 unix extensions or NFS to create symlinks can race the server by renaming a realpath() checked path and then creating a symlink. If the client wins the race it can cause the server to access the new symlink target after the exported share path check has been done. This new symlink target can point to anywhere on the server file system. This is a difficult race to win, but theoretically possible. Note that the proof of concept code supplied wins the race reliably only when the server is slowed down using the strace utility running on the server. Exploitation of this bug has not been seen in the wild. Signed-off-by: Peter Korsgaard <peter@korsgaard.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-rw-r--r--package/samba4/samba4.hash2
-rw-r--r--package/samba4/samba4.mk2
2 files changed, 2 insertions, 2 deletions
diff --git a/package/samba4/samba4.hash b/package/samba4/samba4.hash
index 4fec55dd60..71d24f7feb 100644
--- a/package/samba4/samba4.hash
+++ b/package/samba4/samba4.hash
@@ -1,2 +1,2 @@
# Locally calculated
-sha256 bff02762b3e4ee030f02266c6e24a0b888248b387246219b7fbe3e1758ef2184 samba-4.5.5.tar.gz
+sha256 ac70f09af80639d8189e1b9bc0a554841ee44df2b1ef58e7e682ad5400fd9400 samba-4.5.7.tar.gz
diff --git a/package/samba4/samba4.mk b/package/samba4/samba4.mk
index f64b684bf8..aa7cb576d2 100644
--- a/package/samba4/samba4.mk
+++ b/package/samba4/samba4.mk
@@ -4,7 +4,7 @@
#
################################################################################
-SAMBA4_VERSION = 4.5.5
+SAMBA4_VERSION = 4.5.7
SAMBA4_SITE = https://download.samba.org/pub/samba/stable
SAMBA4_SOURCE = samba-$(SAMBA4_VERSION).tar.gz
SAMBA4_INSTALL_STAGING = YES