libsmbclient, samba, samba3x security update

ID CESA-2014:0866
Type centos
Reporter CentOS Project
Modified 2014-07-09T18:25:19


CentOS Errata and Security Advisory CESA-2014:0866

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

A denial of service flaw was found in the way the sys_recvfile() function of nmbd, the NetBIOS message block daemon, processed non-blocking sockets. An attacker could send a specially crafted packet that, when processed, would cause nmbd to enter an infinite loop and consume an excessive amount of CPU time. (CVE-2014-0244)

It was discovered that smbd, the Samba file server daemon, did not properly handle certain files that were stored on the disk and used a valid Unicode character in the file name. An attacker able to send an authenticated non-Unicode request that attempted to read such a file could cause smbd to crash. (CVE-2014-3493)

Red Hat would like to thank Daniel Berteaud of FIREWALL-SERVICES SARL for reporting CVE-2014-0244, and the Samba project for reporting CVE-2014-3493. The Samba project acknowledges Simon Arlott as the original reporter of CVE-2014-3493.

All Samba users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, the smb service will be restarted automatically.

Merged security bulletin from advisories:

Affected packages: libsmbclient libsmbclient-devel samba samba-client samba-common samba-doc samba-domainjoin-gui samba-swat samba-winbind samba-winbind-clients samba-winbind-devel samba-winbind-krb5-locator samba3x samba3x-client samba3x-common samba3x-doc samba3x-domainjoin-gui samba3x-swat samba3x-winbind samba3x-winbind-devel

Upstream details at: