Synopsis

Moderate: samba security update

Type/Severity

Security Advisory: Moderate

Topic

An update for samba is now available for Red Hat Gluster Storage 3.2 for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information.

Security Fix(es):

• A race condition was found in samba server. A malicious samba client could use this flaw to access files and directories, in areas of the server file system not exported under the share definitions. (CVE-2017-2619)
  
• A flaw was found in the way Samba handled dangling symlinks. An authenticated malicious Samba client could use this flaw to cause the smbd daemon to enter an infinite loop and use an excessive amount of CPU and memory. (CVE-2017-9461)
  

Red Hat would like to thank the Samba project for reporting CVE-2017-2619. Upstream acknowledges Jann Horn (Google) as the original reporter of CVE-2017-2619.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing this update, the smb service will be restarted automatically.

Affected Products

• Red Hat Gluster Storage Server for On-premise 3.1 for RHEL 7 x86_64

Fixes

• BZ - 1429472 - CVE-2017-2619 samba: symlink race permits opening files outside share directory
• BZ - 1459464 - CVE-2017-9461 samba: fd_open_atomic infinite loop due to wrong handling of dangling symlinks
• BZ - 1465528 - RHEL7.4 Upgrade fails over RHGS 3.2.0 for samba ctdb packages

CVEs

• CVE-2017-2619
• CVE-2017-9461

References

• https://access.redhat.com/security/updates/classification/#moderate

Red Hat Gluster Storage Server for On-premise 3.1 for RHEL 7

SRPM
samba-4.6.3-4.el7rhgs.src.rpm	SHA-256: a3170a1d379c8d71130a3aac1da57371e7c863969314a0283254d86f19451aa9
x86_64
ctdb-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 9ae8bcb5414fdc478d6fd8f69c399ff481afd4c13c05b08af4b76082779422a1
ctdb-tests-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 6f2ede50a3d23a5cc31ceb06f6a1ad8c1f849645b52d5432c8f34ddcb6990647
libsmbclient-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 7b4177fa90156dbec8ac33bfbad5c83622356c922ef85b779d11f64bcc9f02f0
libsmbclient-devel-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 9953ea04edba041b0b8accabf76ff8548b88ad17196a5bb5b2241ed02ee11191
libwbclient-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 1cb1a788c5badba930fbef80db2d5f5dd0cbecbfcb2bbe73e2ee309b674923f9
libwbclient-devel-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 96e88dc4973ef78d74f8ce229879a64883d5c8665b4a81872b64aef6c4892c43
samba-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 2f3d5ce989e2cafa07057c979994f46a865f5e8f80605d949115b781806e8d5a
samba-client-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 0d8c1232017911e856fbd710a7510edf36bbdf02a366b8b5d86bfe5f0ff124b9
samba-client-libs-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 119aa003c038598ac5abf44d9fddf184b78330c3461406c20379d902f08211c5
samba-common-4.6.3-4.el7rhgs.noarch.rpm	SHA-256: 00c825ef1fc391f82145b9c8026fdfa878966ea99135c32c1de76b6dd3aeb09b
samba-common-libs-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 6b760f6c2b6ef8bd82cb626cdac477deeccef8fc7c5efc951bd12c95016674ae
samba-common-tools-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 5d41301be531ecce29d33055d6ce5f7e7104d10dd1754aa7799a1fc5f3d1eb83
samba-dc-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: de97078738ddff8319aacedf14d166cc526d84412e3e2ca8cfd9770fa37959ee
samba-dc-libs-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 9b445bccfbd49e69bf32716f9c43c81c099958699dc2258ea4faa3f69753eb46
samba-debuginfo-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 1c5813a438ca4b35a0ee4dd1e67fb23599bbe4006d07a0b66197deac88a6ed4b
samba-devel-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: bac3189737a7b26c602a0039a1defbeb26d388cab77684f133607fbf1ba74a40
samba-krb5-printing-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: fcf74e59608e24262666a225e0e12f3bf93d69064edd2405c2ac2d9f35cf60b0
samba-libs-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 193702b229b1723ccbf00fc65b9ae75e306c7811fa651cb0f9fc2128549329bb
samba-pidl-4.6.3-4.el7rhgs.noarch.rpm	SHA-256: e43bd8f1ad88dc4b5a195cd00b79c6b58d3785372207a6bb80633779f9bb3ca5
samba-python-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 100143c5d08954e317d21721604351d87b541ea8c9c147f23c5fd467d54c14fa
samba-test-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 39f71d4f463c86be9ef7969f2b1f1cf22d2536152756565d339e61922ceff6e3
samba-test-libs-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: cf0634ef54a8c0b3e6183d75acca56287928585801469260b38d6627792aace6
samba-vfs-glusterfs-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: e66551fbb435db5a46b847ab7dfc793843444c90f4ce5032929686610edf3565
samba-winbind-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 1de44222567a6e4e1db77b4f130130ab27ebd2b7dbde511ab3d8f2f9776dbadf
samba-winbind-clients-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 3b856cc07e495b782bb869ef39f1d0ccbe6dad72a2769d6d75861f609a9d4480
samba-winbind-krb5-locator-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 432abe5ab29fb2df4a98eb4e561dcb5ab4dddbbd34cdd58abaf73336906b0c2f
samba-winbind-modules-4.6.3-4.el7rhgs.x86_64.rpm	SHA-256: 158c7cbde56ff039a751892d0fb6164f9c3c5623807b5ca186066c994c7c2fbf