Updated samba packages that fix an input validation vulnerability are now available.
Samba provides file and printer sharing services to SMB/CIFS clients. Karol Wiesek discovered an input validation issue in Samba prior to 3.0.6. An authenticated user could send a carefully crafted request to the Samba server, which would allow access to files outside of the configured file share. Note: Such files would have to be readable by the account used for the connection. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0815 to this issue. This issue does not affect CentOS Linux 3 as a previous erratum updated to Samba 3.0.6 which is not vulnerable to this issue. Users of Samba should upgrade to these updated packages, which contain an upgrade to Samba-2.2.12, which is not vulnerable to this issue.