Ubuntu 1226-1: Samba vulnerabilities

    Date04 Oct 2011
    CategoryUbuntu
    34
    Posted ByLinuxSecurity Advisories
    An attacker could trick Samba into corrupting the system mtab file.
    ==========================================================================
    Ubuntu Security Notice USN-1226-1
    October 04, 2011
    
    samba vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 10.04 LTS
    - Ubuntu 8.04 LTS
    
    Summary:
    
    An attacker could trick Samba into corrupting the system mtab file.
    
    Software Description:
    - samba: SMB/CIFS file, print, and login server for Unix
    
    Details:
    
    Dan Rosenberg discovered that Samba incorrectly handled changes to the mtab
    file. A local attacker could use this issue to corrupt the mtab file,
    possibly leading to a denial of service. (CVE-2011-1678)
    
    Jan Lieskovsky discovered that Samba incorrectly filtered certain strings
    being added to the mtab file. A local attacker could use this issue to
    corrupt the mtab file, possibly leading to a denial of service. This issue
    only affected Ubuntu 10.04 LTS. (CVE-2011-2724)
    
    Dan Rosenberg discovered that Samba incorrectly handled the mtab lock file.
    A local attacker could use this issue to create a stale lock file, possibly
    leading to a denial of service. (CVE-2011-3585)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 10.04 LTS:
      smbfs                           2:3.4.7~dfsg-1ubuntu3.8
    
    Ubuntu 8.04 LTS:
      smbfs                           3.0.28a-1ubuntu4.16
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-1226-1
      CVE-2011-1678, CVE-2011-2724, CVE-2011-3585
    
    Package Information:
      https://launchpad.net/ubuntu/+source/samba/2:3.4.7~dfsg-1ubuntu3.8
      https://launchpad.net/ubuntu/+source/samba/3.0.28a-1ubuntu4.16
    
    
    
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