USN-544-1: Samba vulnerabilities
16 November 2007
samba vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 7.10
- Ubuntu 7.04
- Ubuntu 6.10
- Ubuntu 6.06 LTS
Software Description
- samba
Details
Samba developers discovered that nmbd could be made to overrun a buffer during the processing of GETDC logon server requests. When samba is configured as a Primary or Backup Domain Controller, a remote attacker could send malicious logon requests and possibly cause a denial of service. (CVE-2007-4572)
Alin Rad Pop of Secunia Research discovered that nmbd did not properly check the length of netbios packets. When samba is configured as a WINS server, a remote attacker could send multiple crafted requests resulting in the execution of arbitrary code with root privileges. (CVE-2007-5398)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 7.10
- samba - 3.0.26a-1ubuntu2.1
- Ubuntu 7.04
- samba - 3.0.24-2ubuntu1.3
- Ubuntu 6.10
- samba - 3.0.22-1ubuntu4.3
- Ubuntu 6.06 LTS
- samba - 3.0.22-1ubuntu3.4
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the necessary changes.