Mageia 2020-0058: samba security update

    Date27 Jan 2020
    109
    Posted ByLinuxSecurity Advisories
    The implementation of ACL inheritance in the Samba AD DC was not complete, and so absent a 'full-sync' replication, ACLs could get out of sync between domain controllers (CVE-2019-14902). When processing untrusted string input Samba can read past the end of
    MGASA-2020-0058 - Updated samba packages fix security vulnerabilities
    
    Publication date: 28 Jan 2020
    URL: https://advisories.mageia.org/MGASA-2020-0058.html
    Type: security
    Affected Mageia releases: 7
    CVE: CVE-2019-14902,
         CVE-2019-14907,
         CVE-2019-19344
    
    The implementation of ACL inheritance in the Samba AD DC was not
    complete, and so absent a 'full-sync' replication, ACLs could get out of
    sync between domain controllers (CVE-2019-14902).
    
    When processing untrusted string input Samba can read past the end of
    the allocated buffer when printing a "Conversion error" message to the
    logs. This can cause a crash after the failed character conversion when
    operating at log level 3 or above (CVE-2019-14907).
    
    During DNS zone scavenging (of expired dynamic entries) in a Samba AD
    DC, there is a read of memory after it has been freed (CVE-2019-19344).
    
    Note that manual intervention is required to fully implement the fix
    for CVE-2019-14902.  See the upstream advisory for details.
    
    References:
    - https://bugs.mageia.org/show_bug.cgi?id=26113
    - https://usn.ubuntu.com/4244-1/
    - https://www.samba.org/samba/security/CVE-2019-14902.html
    - https://www.samba.org/samba/security/CVE-2019-14907.html
    - https://www.samba.org/samba/security/CVE-2019-19344.html
    - https://www.samba.org/samba/history/samba-4.10.12.html
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14902
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14907
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19344
    
    SRPMS:
    - 7/core/samba-4.10.12-1.mga7
    
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