Ubuntu 4409-1: Samba vulnerabilities

    Date 02 Jul 2020
    159
    Posted By LinuxSecurity Advisories
    Several security issues were fixed in Samba.
    ==========================================================================
    Ubuntu Security Notice USN-4409-1
    July 02, 2020
    
    samba vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 20.04 LTS
    - Ubuntu 19.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 ESM
    - Ubuntu 12.04 ESM
    
    Summary:
    
    Several security issues were fixed in Samba.
    
    Software Description:
    - samba: SMB/CIFS file, print, and login server for Unix
    
    Details:
    
    Andrew Bartlett discovered that Samba incorrectly handled certain LDAP queries.
    A remote attacker could use this issue to cause Samba to crash, resulting
    in a denial of service, or possibly execute arbitrary code. This issue only
    affected Ubuntu 18.04 LTS, Ubuntu 19.10 and Ubuntu 20.04 LTS. (CVE-2020-10730)
    
    Douglas Bagnall discovered that Samba incorrectly handled certain queries.
    A remote attacker could possibly use this issue to cause a denial of service.
    (CVE-2020-10745)
    
    Andrei Popa discovered that Samba incorrectly handled certain LDAP queries.
    A remote attacker could use this issue to cause Samba to crash, resulting
    in a denial of service, or possibly execute arbitrary code. This issue only
    affected Ubuntu 18.04 LTS, Ubuntu 19.10 and Ubuntu 20.04 LTS.
    (CVE-2020-10760)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 20.04 LTS:
      samba                           2:4.11.6+dfsg-0ubuntu1.3
    
    Ubuntu 19.10:
      samba                           2:4.10.7+dfsg-0ubuntu2.6
    
    Ubuntu 18.04 LTS:
      samba                           2:4.7.6+dfsg~ubuntu-0ubuntu2.17
    
    Ubuntu 16.04 LTS:
      samba                           2:4.3.11+dfsg-0ubuntu0.16.04.28
    
    Ubuntu 14.04 ESM:
      samba                           2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7
    
    Ubuntu 12.04 ESM:
      samba                           2:3.6.25-0ubuntu0.12.04.20
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4409-1
      CVE-2020-10730, CVE-2020-10745, CVE-2020-10760
    
    Package Information:
      https://launchpad.net/ubuntu/+source/samba/2:4.11.6+dfsg-0ubuntu1.3
      https://launchpad.net/ubuntu/+source/samba/2:4.10.7+dfsg-0ubuntu2.6
      https://launchpad.net/ubuntu/+source/samba/2:4.7.6+dfsg~ubuntu-0ubuntu2.17
      https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.28
    

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