Ubuntu Update for Linux kernel vulnerabilities USN-544-2

Please Install the Updated Packages.

USN-544-1 fixed two vulnerabilities in Samba. Fixes for CVE-2007-5398 are unchanged, but the upstream changes for CVE-2007-4572 introduced a regression in all releases which caused Linux smbfs mounts to fail. Additionally, Dapper and Edgy included an incomplete patch which caused configurations using NetBIOS to fail. A proper fix for these regressions does not exist at this time, and so the patch addressing CVE-2007-4572 has been removed. This vulnerability is believed to be an unexploitable denial of service, but a future update will address this issue. We apologize for the inconvenience. Original advisory 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)

samba regression on Ubuntu 6.06 LTS , Ubuntu 6.10 , Ubuntu 7.04 , Ubuntu 7.10

• https://lists.ubuntu.com/archives/ubuntu-security-announce/2007-November/000626.html

---

Updated on 2015-03-25