Virtuozzo 6 : samba4 / samba4-client / samba4-common / samba4-dc / etc (VZLSA-2017-2791)
Medium Nessus Plugin ID 119227
SynopsisThe remote Virtuozzo host is missing a security update.
DescriptionAn update for samba4 is now available for Red Hat Enterprise Linux 6.
Red Hat Product Security has rated this update as having a security
impact of Moderate. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.
Samba is an open source implementation of the Server Message Block
(SMB) or Common Internet File System (CIFS) protocol, which allows
PC-compatible machines to share files, printers, and other
Security Fix(es) :
* It was found that samba did not enforce 'SMB signing' when certain
configuration options were enabled. A remote attacker could launch a
man-in-the-middle attack and retrieve information in plain-text.
* An information leak flaw was found in the way SMB1 protocol was
implemented by Samba. A malicious client could use this flaw to dump
server memory contents to a file on the samba share or to a shared
printer, though the exact area of server memory cannot be controlled
by the attacker. (CVE-2017-12163)
Red Hat would like to thank the Samba project for reporting
CVE-2017-12150 and Yihan Lian and Zhibin Hu (Qihoo 360 GearTeam),
Stefan Metzmacher (SerNet), and Jeremy Allison (Google) for reporting
CVE-2017-12163. Upstream acknowledges Stefan Metzmacher (SerNet) as
the original reporter of CVE-2017-12150.
Note that Tenable Network Security has attempted to extract the
preceding description block directly from the corresponding Red Hat
security advisory. Virtuozzo provides no description for VZLSA
advisories. Tenable has attempted to automatically clean and format
it as much as possible without introducing additional issues.
SolutionUpdate the affected samba4 / samba4-client / samba4-common / samba4-dc / etc package.