Executive Summary
Summary | |
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Title | ntp security, bug fix, and enhancement update |
Informations | |||
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Name | RHSA-2015:1459 | First vendor Publication | 2015-07-22 |
Vendor | RedHat | Last vendor Modification | 2015-07-22 |
Severity (Vendor) | Moderate | Revision | 01 |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
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Overall CVSS Score | NA | ||
Base Score | NA | Environmental Score | NA |
impact SubScore | NA | Temporal Score | NA |
Exploitabality Sub Score | NA | ||
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:P) | |||
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Cvss Base Score | 6.8 | Attack Range | Network |
Cvss Impact Score | 6.4 | Attack Complexity | Medium |
Cvss Expoit Score | 8.6 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: Updated ntp packages that fix multiple security issues, several bugs, and add two enhancements are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, noarch, x86_64 3. Description: The Network Time Protocol (NTP) is used to synchronize a computer's time with another referenced time source. It was found that because NTP's access control was based on a source IP address, an attacker could bypass source IP restrictions and send malicious control and configuration packets by spoofing ::1 addresses. (CVE-2014-9298) A denial of service flaw was found in the way NTP hosts that were peering with each other authenticated themselves before updating their internal state variables. An attacker could send packets to one peer host, which could cascade to other peers, and stop the synchronization process among the reached peers. (CVE-2015-1799) A flaw was found in the way the ntp-keygen utility generated MD5 symmetric keys on big-endian systems. An attacker could possibly use this flaw to guess generated MD5 keys, which could then be used to spoof an NTP client or server. (CVE-2015-3405) A stack-based buffer overflow was found in the way the NTP autokey protocol was implemented. When an NTP client decrypted a secret received from an NTP server, it could cause that client to crash. (CVE-2014-9297) It was found that ntpd did not check whether a Message Authentication Code (MAC) was present in a received packet when ntpd was configured to use symmetric cryptographic keys. A man-in-the-middle attacker could use this flaw to send crafted packets that would be accepted by a client or a peer without the attacker knowing the symmetric key. (CVE-2015-1798) The CVE-2015-1798 and CVE-2015-1799 issues were discovered by Miroslav Lichvár of Red Hat. Bug fixes: * The ntpd daemon truncated symmetric keys specified in the key file to 20 bytes. As a consequence, it was impossible to configure NTP authentication to work with peers that use longer keys. The maximum length of keys has now been changed to 32 bytes. (BZ#1053551) * The ntp-keygen utility used the exponent of 3 when generating RSA keys, and generating RSA keys failed when FIPS mode was enabled. ntp-keygen has been modified to use the exponent of 65537, and generating keys in FIPS mode now works as expected. (BZ#1184421) * The ntpd daemon included a root delay when calculating its root dispersion. Consequently, the NTP server reported larger root dispersion than it should have and clients could reject the source when its distance reached the maximum synchronization distance (1.5 seconds by default). Calculation of root dispersion has been fixed, the root dispersion is now reported correctly, and clients no longer reject the server due to a large synchronization distance. (BZ#1045376) * The ntpd daemon dropped incoming NTP packets if their source port was lower than 123 (the NTP port). Clients behind Network Address Translation (NAT) were unable to synchronize with the server if their source port was translated to ports below 123. With this update, ntpd no longer checks the source port number. (BZ#1171630) Enhancements: * This update introduces configurable access of memory segments used for Shared Memory Driver (SHM) reference clocks. Previously, only the first two memory segments were created with owner-only access, allowing just two SHM reference clocks to be used securely on a system. Now, the owner-only access to SHM is configurable with the "mode" option, and it is therefore possible to use more SHM reference clocks securely. (BZ#1122015) * Support for nanosecond resolution has been added to the SHM reference clock. Prior to this update, when a Precision Time Protocol (PTP) hardware clock was used as a time source to synchronize the system clock (for example, with the timemaster service from the linuxptp package), the accuracy of the synchronization was limited due to the microsecond resolution of the SHM protocol. The nanosecond extension in the SHM protocol now enables sub-microsecond synchronization of the system clock. (BZ#1117704) 4. Solution: All ntp users are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements. After installing the update, the ntpd daemon will restart automatically. Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 995134 - ntp package doesn't build with net-snmp-devel 1045376 - Fix root distance and root dispersion calculations. 1117704 - SHM refclock doesn't support nanosecond resolution 1122015 - SHM refclock allows only two units with owner-only access 1165141 - ntp: mreadvar command crash in ntpq 1166596 - ntpd should warn when monitoring facility can't be disabled due to restrict configuration 1171630 - NTP drops requests when sourceport is below 123 1184572 - CVE-2014-9298 ntp: drop packets with source address ::1 1184573 - CVE-2014-9297 ntp: vallen in extension fields are not validated 1190619 - ntpd -x steps clock on leap second 1193849 - logconfig documentation needs update 1193850 - ntpd does not update dstadr when the routing table changes 1199430 - CVE-2015-1798 ntp: ntpd accepts unauthenticated packets with symmetric key crypto 1199435 - CVE-2015-1799 ntp: authentication doesn't protect symmetric associations against DoS attacks 1210324 - CVE-2015-3405 ntp: ntp-keygen may generate non-random symmetric keys on big-endian systems |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2015-1459.html |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
40 % | CWE-20 | Improper Input Validation |
40 % | CWE-17 | Code |
20 % | CWE-331 | Insufficient Entropy |
OVAL Definitions
Definition Id: oval:org.mitre.oval:def:28698 | |||
Oval ID: | oval:org.mitre.oval:def:28698 | ||
Title: | Symmetric-Key feature allows MAC address spoofing. | ||
Description: | The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x 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. | ||
Family: | unix | Class: | vulnerability |
Reference(s): | CVE-2015-1798 | Version: | 3 |
Platform(s): | HP-UX 11 | Product(s): | |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:28761 | |||
Oval ID: | oval:org.mitre.oval:def:28761 | ||
Title: | Potential security vulnerabilities have been identified with HP-UX running NTP. These could be exploited remotely to execute code, create a Denial of Service (DoS), or other vulnerabilities. | ||
Description: | ** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided. | ||
Family: | unix | Class: | vulnerability |
Reference(s): | CVE-2014-9297 | Version: | 7 |
Platform(s): | HP-UX 11 | Product(s): | |
Definition Synopsis: | |||
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Definition Id: oval:org.mitre.oval:def:28915 | |||
Oval ID: | oval:org.mitre.oval:def:28915 | ||
Title: | Symmetric-Key feature allows denial of service | ||
Description: | The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 3.x and 4.x 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. | ||
Family: | unix | Class: | vulnerability |
Reference(s): | CVE-2015-1799 | Version: | 3 |
Platform(s): | HP-UX 11 | Product(s): | |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:29492 | |||
Oval ID: | oval:org.mitre.oval:def:29492 | ||
Title: | AIX 'NTPv4' vulnerability | ||
Description: | The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 3.x and 4.x 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. | ||
Family: | unix | Class: | vulnerability |
Reference(s): | CVE-2015-1799 | Version: | 5 |
Platform(s): | IBM AIX 6.1 IBM AIX 7.1 | Product(s): | |
Definition Synopsis: | |||
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Definition Id: oval:org.mitre.oval:def:29503 | |||
Oval ID: | oval:org.mitre.oval:def:29503 | ||
Title: | AIX 'NTPv4' vulnerability | ||
Description: | ** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided. | ||
Family: | unix | Class: | vulnerability |
Reference(s): | CVE-2014-9297 | Version: | 5 |
Platform(s): | IBM AIX 6.1 IBM AIX 7.1 | Product(s): | |
Definition Synopsis: | |||
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CPE : Common Platform Enumeration
Information Assurance Vulnerability Management (IAVM)
Date | Description |
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2015-02-19 | IAVM : 2015-A-0041 - Multiple Vulnerabilities in Network Time Protocol (NTP) Severity : Category I - VMSKEY : V0058907 |
Nessus® Vulnerability Scanner
Date | Description |
---|---|
2018-04-10 | Name : The remote device is missing a vendor-supplied security patch. File : cisco-sa-20150408-ntpd-iosxe.nasl - Type : ACT_GATHER_INFO |
2018-04-10 | Name : The remote device is missing a vendor-supplied security patch. File : cisco-sa-20150408-ntpd-ios.nasl - Type : ACT_GATHER_INFO |
2017-05-01 | Name : The remote EulerOS host is missing multiple security updates. File : EulerOS_SA-2016-1060.nasl - Type : ACT_GATHER_INFO |
2016-12-15 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20161103_ntp_on_SL7_x.nasl - Type : ACT_GATHER_INFO |
2016-11-28 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2016-2583.nasl - Type : ACT_GATHER_INFO |
2016-11-11 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2016-2583.nasl - Type : ACT_GATHER_INFO |
2016-11-04 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2016-2583.nasl - Type : ACT_GATHER_INFO |
2016-08-29 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2016-1912-1.nasl - Type : ACT_GATHER_INFO |
2016-06-09 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20160510_ntp_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
2016-06-01 | Name : The remote device is affected by multiple vulnerabilities. File : cisco_ace_A5_3_3.nasl - Type : ACT_GATHER_INFO |
2016-05-17 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2016-0780.nasl - Type : ACT_GATHER_INFO |
2016-05-16 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2016-0780.nasl - Type : ACT_GATHER_INFO |
2016-05-12 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2016-0780.nasl - Type : ACT_GATHER_INFO |
2015-12-22 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20151119_ntp_on_SL7_x.nasl - Type : ACT_GATHER_INFO |
2015-12-02 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2015-2231.nasl - Type : ACT_GATHER_INFO |
2015-11-24 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2015-2231.nasl - Type : ACT_GATHER_INFO |
2015-11-20 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2015-2231.nasl - Type : ACT_GATHER_INFO |
2015-11-06 | Name : The remote device is missing a vendor-supplied security patch. File : f5_bigip_SOL17530.nasl - Type : ACT_GATHER_INFO |
2015-11-02 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-3388.nasl - Type : ACT_GATHER_INFO |
2015-10-30 | Name : The remote Slackware host is missing a security update. File : Slackware_SSA_2015-302-03.nasl - Type : ACT_GATHER_INFO |
2015-10-29 | Name : The remote Debian host is missing a security update. File : debian_DLA-335.nasl - Type : ACT_GATHER_INFO |
2015-10-29 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2015-607.nasl - Type : ACT_GATHER_INFO |
2015-10-05 | Name : The remote device is missing a vendor-supplied security patch. File : f5_bigip_SOL16393.nasl - Type : ACT_GATHER_INFO |
2015-09-25 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201509-01.nasl - Type : ACT_GATHER_INFO |
2015-09-21 | Name : The remote device is missing a vendor-supplied security patch. File : f5_bigip_SOL16506.nasl - Type : ACT_GATHER_INFO |
2015-09-16 | Name : The remote device is missing a vendor-supplied security patch. File : f5_bigip_SOL16392.nasl - Type : ACT_GATHER_INFO |
2015-09-03 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2015-593.nasl - Type : ACT_GATHER_INFO |
2015-08-25 | Name : The remote AIX host is missing a security patch. File : aix_IV74263.nasl - Type : ACT_GATHER_INFO |
2015-08-25 | Name : The remote AIX host is missing a security patch. File : aix_IV74262.nasl - Type : ACT_GATHER_INFO |
2015-08-25 | Name : The remote AIX host is missing a security patch. File : aix_IV74261.nasl - Type : ACT_GATHER_INFO |
2015-08-25 | Name : The remote AIX host is missing a security patch. File : aix_IV73783.nasl - Type : ACT_GATHER_INFO |
2015-08-04 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20150722_ntp_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
2015-07-31 | Name : The remote OracleVM host is missing one or more security updates. File : oraclevm_OVMSA-2015-0102.nasl - Type : ACT_GATHER_INFO |
2015-07-30 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2015-1459.nasl - Type : ACT_GATHER_INFO |
2015-07-28 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2015-1459.nasl - Type : ACT_GATHER_INFO |
2015-07-23 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2015-1459.nasl - Type : ACT_GATHER_INFO |
2015-07-06 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2015-1173-1.nasl - Type : ACT_GATHER_INFO |
2015-07-02 | Name : The remote AIX host is missing a security patch. File : aix_IV71096.nasl - Type : ACT_GATHER_INFO |
2015-07-02 | Name : The remote AIX host is missing a security patch. File : aix_IV71094.nasl - Type : ACT_GATHER_INFO |
2015-07-01 | Name : The remote host is missing a Mac OS X update that fixes multiple security vul... File : macosx_SecUpd2015-005.nasl - Type : ACT_GATHER_INFO |
2015-07-01 | Name : The remote host is missing a Mac OS X update that fixes multiple security vul... File : macosx_10_10_4.nasl - Type : ACT_GATHER_INFO |
2015-05-28 | Name : A network management system on the remote host is affected by multiple vulner... File : cisco-sa-20141222-ntpd-prime_dcnm.nasl - Type : ACT_GATHER_INFO |
2015-05-21 | Name : The remote NTP server is affected by multiple vulnerabilities. File : ntp_4_2_8p2.nasl - Type : ACT_GATHER_INFO |
2015-05-20 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2015-0865-1.nasl - Type : ACT_GATHER_INFO |
2015-05-20 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2015-0322-1.nasl - Type : ACT_GATHER_INFO |
2015-05-07 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2015-520.nasl - Type : ACT_GATHER_INFO |
2015-04-29 | Name : The remote Fedora host is missing a security update. File : fedora_2015-5830.nasl - Type : ACT_GATHER_INFO |
2015-04-28 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2015-330.nasl - Type : ACT_GATHER_INFO |
2015-04-24 | Name : The remote device is missing a vendor-supplied security patch. File : f5_bigip_SOL16505.nasl - Type : ACT_GATHER_INFO |
2015-04-23 | Name : The remote Fedora host is missing a security update. File : fedora_2015-5874.nasl - Type : ACT_GATHER_INFO |
2015-04-23 | Name : The remote Fedora host is missing a security update. File : fedora_2015-5761.nasl - Type : ACT_GATHER_INFO |
2015-04-22 | Name : The remote Slackware host is missing a security update. File : Slackware_SSA_2015-111-08.nasl - Type : ACT_GATHER_INFO |
2015-04-14 | Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-2567-1.nasl - Type : ACT_GATHER_INFO |
2015-04-14 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-3223.nasl - Type : ACT_GATHER_INFO |
2015-04-13 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2015-202.nasl - Type : ACT_GATHER_INFO |
2015-04-13 | Name : The remote Debian host is missing a security update. File : debian_DLA-192.nasl - Type : ACT_GATHER_INFO |
2015-04-10 | Name : The remote host is missing a Mac OS X update that fixes multiple security vul... File : macosx_10_10_3.nasl - Type : ACT_GATHER_INFO |
2015-04-10 | Name : The remote HP-UX host is missing a security-related patch. File : hpux_PHNE_44236.nasl - Type : ACT_GATHER_INFO |
2015-04-10 | Name : The remote HP-UX host is missing a security-related patch. File : hpux_PHNE_44235.nasl - Type : ACT_GATHER_INFO |
2015-04-08 | Name : The remote FreeBSD host is missing one or more security-related updates. File : freebsd_pkg_ebd84c96dd7e11e4854e3c970e169bc2.nasl - Type : ACT_GATHER_INFO |
2015-03-30 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2015-140.nasl - Type : ACT_GATHER_INFO |
2015-03-26 | Name : The remote Debian host is missing a security update. File : debian_DLA-149.nasl - Type : ACT_GATHER_INFO |
2015-03-25 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2015-496.nasl - Type : ACT_GATHER_INFO |
2015-03-20 | Name : The remote NTP server is affected by multiple vulnerabilities. File : ntp_4_2_8.nasl - Type : ACT_GATHER_INFO |
2015-02-16 | Name : The remote Fedora host is missing a security update. File : fedora_2015-1759.nasl - Type : ACT_GATHER_INFO |
2015-02-16 | Name : The remote Fedora host is missing a security update. File : fedora_2015-1736.nasl - Type : ACT_GATHER_INFO |
2015-02-13 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2015-046.nasl - Type : ACT_GATHER_INFO |
2015-02-12 | Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_ntp-150209.nasl - Type : ACT_GATHER_INFO |
2015-02-10 | Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-2497-1.nasl - Type : ACT_GATHER_INFO |
2015-02-06 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-3154.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
---|---|
2018-01-05 09:26:22 |
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2017-08-25 21:25:48 |
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2017-08-09 21:25:22 |
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2015-12-05 13:28:12 |
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2015-10-06 09:28:27 |
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2015-07-31 13:29:11 |
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2015-07-24 13:30:06 |
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2015-07-22 09:24:26 |
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