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    Debian: DSA-3514-1: samba security update

    Date 12 Mar 2016
    139
    Posted By LinuxSecurity Advisories
    Several vulnerabilities have been discovered in Samba, a SMB/CIFS file, print, and login server for Unix. The Common Vulnerabilities and Exposures project identifies the following issues:
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-3514-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                     Salvatore Bonaccorso
    March 12, 2016                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : samba
    CVE ID         : CVE-2015-7560 CVE-2016-0771
    Debian Bug     : 812429
    
    Several vulnerabilities have been discovered in Samba, a SMB/CIFS file,
    print, and login server for Unix. The Common Vulnerabilities and
    Exposures project identifies the following issues:
    
    CVE-2015-7560
    
        Jeremy Allison of Google, Inc. and the Samba Team discovered that
        Samba incorrectly handles getting and setting ACLs on a symlink
        path. An authenticated malicious client can use SMB1 UNIX extensions
        to create a symlink to a file or directory, and then use non-UNIX
        SMB1 calls to overwrite the contents of the ACL on the file or
        directory linked to.
    
    CVE-2016-0771
    
        Garming Sam and Douglas Bagnall of Catalyst IT discovered that Samba
        is vulnerable to an out-of-bounds read issue during DNS TXT record
        handling, if Samba is deployed as an AD DC and chosen to run the
        internal DNS server. A remote attacker can exploit this flaw to
        cause a denial of service (Samba crash), or potentially, to allow
        leakage of memory from the server in the form of a DNS TXT reply.
    
    Additionally this update includes a fix for a regression introduced due
    to the upstream fix for CVE-2015-5252 in DSA-3433-1 in setups where the
    share path is '/'.
    
    For the oldstable distribution (wheezy), these problems have been fixed
    in version 2:3.6.6-6+deb7u7. The oldstable distribution (wheezy) is not
    affected by CVE-2016-0771.
    
    For the stable distribution (jessie), these problems have been fixed in
    version 2:4.1.17+dfsg-2+deb8u2.
    
    For the unstable distribution (sid), these problems have been fixed in
    version 2:4.3.6+dfsg-1.
    
    We recommend that you upgrade your samba packages.
    
    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/
    
    Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
    

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