| Description: | Samba is an open-source implementation of the Server Message Block (SMB) orCommon Internet File System (CIFS) protocol, which allows PC-compatiblemachines to share files, printers, and other information.It was found that certain Samba configurations did not enforce the passwordlockout mechanism. A remote attacker could use this flaw to performpassword guessing attacks on Samba user accounts. Note: this flaw onlyaffected Samba when deployed as a Primary Domain Controller.(CVE-2013-4496)A flaw was found in Samba's "smbcacls" command, which is used to set or getACLs on SMB file shares. Certain command line options of this command wouldincorrectly remove an ACL previously applied on a file or a directory,leaving the file or directory without the intended ACL. (CVE-2013-6442)A flaw was found in the way the pam_winbind module handled configurationsthat specified a non-existent group as required. An authenticated usercould possibly use this flaw to gain access to a service using pam_winbindin its PAM configuration when group restriction was intended for access tothe service. (CVE-2012-6150)Red Hat would like to thank the Samba project for reporting CVE-2013-4496and CVE-2013-6442, and Sam Richardson for reporting CVE-2012-6150.Upstream acknowledges Andrew Bartlett as the original reporter ofCVE-2013-4496, and Noel Power as the original reporter of CVE-2013-6442.All users of Samba are advised to upgrade to these updated packages, whichcontain backported patches to correct these issues. After installing thisupdate, the smb service will be restarted automatically. |