Debian: DSA-4345-1 Critical Samba Issues: Denial Of Service & LDAP Crash

CVE-2018-14629

Florian Stuelpner discovered that Samba is vulnerable to
infinite query recursion caused by CNAME loops, resulting in
denial of service.



CVE-2018-16841

Alex MacCuish discovered that a user with a valid certificate or
smart card can crash the Samba AD DC's KDC when configured to accept
smart-card authentication.



CVE-2018-16851

Garming Sam of the Samba Team and Catalyst discovered a NULL pointer
dereference vulnerability in the Samba AD DC LDAP server allowing a
user able to read more than 256MB of LDAP entries to crash the Samba
AD DC's LDAP server.



For the stable distribution (stretch), these problems have been fixed in
version 2:4.5.12+dfsg-2+deb9u4.

We recommend that you upgrade your samba packages.

For the detailed security status of samba please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/samba

Further information about Debian Security Advisories, how to apply
these updates to yo...