Mandriva Linux Security Advisory : ntp (MDVSA-2015:202)

Medium Nessus Plugin ID 82737

Synopsis

The remote Mandriva Linux host is missing one or more security updates.

Description

Multiple vulnerabilities has been found and corrected in ntp :

The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC (CVE-2015-1798).

The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP before 4.2.8p2 performs state-variable updates upon receiving certain invalid packets, which makes it easier for man-in-the-middle attackers to cause a denial of service (synchronization loss) by spoofing the source IP address of a peer (CVE-2015-1799).

The updated packages provides a solution for these security issues.

Solution

Update the affected ntp, ntp-client and / or ntp-doc packages.

See Also

http://www.nessus.org/u?fec88bd0

Plugin Details

Severity: Medium

ID: 82737

File Name: mandriva_MDVSA-2015-202.nasl

Version: $Revision: 1.1 $

Type: local

Published: 2015/04/13

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 4.3

Vector: CVSS2#AV:A/AC:M/Au:N/C:N/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:mandriva:linux:ntp, p-cpe:/a:mandriva:linux:ntp-client, p-cpe:/a:mandriva:linux:ntp-doc, cpe:/o:mandriva:business_server:1, cpe:/o:mandriva:business_server:2

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Mandrake/release, Host/Mandrake/rpm-list

Patch Publication Date: 2015/04/10

Reference Information

CVE: CVE-2015-1798, CVE-2015-1799

MDVSA: 2015:202