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RHEL 6 : ntp (RHSA-2016:1552)
high Nessus Plugin ID 92718
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Synopsis
The remote Red Hat host is missing one or more security updates for ntp.Description
The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2016:1552 advisory.- ntp: off-path denial of service on authenticated broadcast mode (CVE-2015-7979)
- ntp: crypto-NAK preemptable association denial of service (CVE-2016-1547)
- ntp: ntpd switching to interleaved mode with spoofed packets (CVE-2016-1548)
- ntp: libntp message digest disclosure (CVE-2016-1550)
- ntp: out-of-bounds references on crafted packet (CVE-2016-2518)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL ntp package based on the guidance in RHSA-2016:1552.See Also
http://www.nessus.org/u?ef98b388
https://access.redhat.com/errata/RHSA-2016:1552
https://access.redhat.com/security/updates/classification/#moderate
https://bugzilla.redhat.com/show_bug.cgi?id=1300271
https://bugzilla.redhat.com/show_bug.cgi?id=1331461
https://bugzilla.redhat.com/show_bug.cgi?id=1331462
Plugin Details
Severity: High
ID: 92718
File Name: redhat-RHSA-2016-1552.nasl
Version: 2.12
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 8/4/2016
Updated: 4/24/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.8
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: Medium
Base Score: 6.4
Temporal Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:P
CVSS Score Source: CVE-2016-1548
CVSS v3
Risk Factor: High
Base Score: 7.2
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:ntp-doc, cpe:/o:redhat:rhel_eus:6.7, p-cpe:/a:redhat:enterprise_linux:ntp, p-cpe:/a:redhat:enterprise_linux:ntp-perl, p-cpe:/a:redhat:enterprise_linux:ntpdate
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 8/3/2016
Vulnerability Publication Date: 1/6/2017
Reference Information
CVE: CVE-2015-7979, CVE-2016-1547, CVE-2016-1548, CVE-2016-1550, CVE-2016-2518