Advisories ยป MGASA-2020-0058

Updated samba packages fix security vulnerabilities

Publication date: 28 Jan 2020
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.