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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:26314
[Rus]
Version
2
Class
patch
ALTXid
153589
Language
English
Severity
High
Title
ALAS-2016-708 -- security update for ntp
Description
It was found that an ntpd client could be forced to change from basic client/server mode to the interleaved symmetric mode. A remote attacker could use a spoofed packet that, when processed by an ntpd client, would cause that client to reject all future legitimate server responses, effectively disabling time synchronization on that client. (CVE-2016-1548)
An out-of-bounds access flaw was found in the way ntpd processed certain packets. An authenticated attacker could use a crafted packet to create a peer association with hmode of 7 and larger, which could potentially (although highly unlikely) cause ntpd to crash. (CVE-2016-2518)
A flaw was found in the way libntp performed message authentication. An attacker able to observe the timing of the comparison function used in packet authentication could potentially use this flaw to recover the message digest. (CVE-2016-1550) Assertion failure in ntpd on duplicate IPs on unconfig directives (CVE-2016-2516)
Family
unix
Platform
Amazon Linux AMI
Product
ntp
Reference
VENDOR: ALAS-2016-708
VENDOR: ALAS-2016-708
Id:
ALAS-2016-708
Reference:
https://alas.aws.amazon.com/ALAS-2016-708.html
CVE: CVE-2016-1548
CVE: CVE-2016-1548
Id:
CVE-2016-1548
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1548
Comment
: An attacker can spoof a packet from a legitimate ntpd server with an origin timestamp that matches the peer->dst timestamp recorded for that server. After making this switch, the client in NTP 4.2.8p4 and earlier and NTPSec aa48d001683e5b791a743ec9c575aaf7d867a2b0c will reject all future legitimate server responses. It is possible to force the victim client to move time after the mode has been changed. ntpq gives no indication that the mode has been switched.
CVSSv2 Score:
6.4
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:N/I:P/A:P
CVSSv3 Score:
7.2
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
CHANGED
Confidentiality impact:
NONE
Integrity impact:
LOW
Availability impact:
LOW
CVSSv3 Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
CWE:
19 (Data Handling)
References:
http://www.talosintelligence.com/reports/TALOS-2016-0082/ (MISC)
88264 (BID)
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html (CONFIRM)
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html (CONFIRM)
GLSA-201607-15 (GENTOO)
1035705 (SECTRACK)
DSA-3629 (DEBIAN)
https://security.netapp.com/advisory/ntap-20171004-0002/ (CONFIRM)
FreeBSD-SA-16:16 (FREEBSD)
RHSA-2016:1141 (REDHAT)
RHSA-2016:1552 (REDHAT)
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf (CONFIRM)
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 (MISC)
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf (CONFIRM)
http://packetstormsecurity.com/files/136864/Slackware-Security-Advisory-ntp-Updates.html (MISC)
SUSE-SU-2016:1568 (SUSE)
openSUSE-SU-2016:1329 (SUSE)
20160429 [slackware-security] ntp (SSA:2016-120-01) (BUGTRAQ)
openSUSE-SU-2016:1423 (SUSE)
DSA-3629 (DEBIAN)
VU#718152 (CERT-VN)
FEDORA-2016-5b2eb0bf9c (FEDORA)
USN-3096-1 (UBUNTU)
SUSE-SU-2016:1278 (SUSE)
SUSE-SU-2016:1291 (SUSE)
SUSE-SU-2016:1912 (SUSE)
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11 (MISC)
FEDORA-2016-ed8c6c0426 (FEDORA)
SUSE-SU-2016:1471 (SUSE)
SUSE-SU-2016:2094 (SUSE)
https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0082 (MISC)
20160428 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: April 2016 (CISCO)
20160429 [slackware-security] ntp (SSA:2016-120-01) (BUGTRAQ)
https://www.arista.com/en/support/advisories-notices/security-advisories/1332-security-advisory-19 (MISC)
CVE: CVE-2016-2518
CVE: CVE-2016-2518
Id:
CVE-2016-2518
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2518
Comment
: The MATCH_ASSOC function in NTP before version 4.2.8p9 and 4.3.x before 4.3.92 allows remote attackers to cause an out-of-bounds reference via an addpeer request with a large hmode value.
CVSSv2 Score:
5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSSv3 Score:
5.3
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
LOW
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE:
125 (Out-of-bounds Read)
References:
VU#718152 (CERT-VN)
http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_ntp_4_2_8p7_Security (CONFIRM)
http://support.ntp.org/bin/view/Main/NtpBug3009 (CONFIRM)
88226 (BID)
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html (CONFIRM)
GLSA-201607-15 (GENTOO)
1035705 (SECTRACK)
DSA-3629 (DEBIAN)
https://security.netapp.com/advisory/ntap-20171004-0002/ (CONFIRM)
FreeBSD-SA-16:16 (FREEBSD)
RHSA-2016:1141 (REDHAT)
RHSA-2016:1552 (REDHAT)
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html (CONFIRM)
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html (CONFIRM)
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf (CONFIRM)
SUSE-SU-2016:1278 (SUSE)
SUSE-SU-2016:1291 (SUSE)
openSUSE-SU-2016:1423 (SUSE)
SUSE-SU-2016:1912 (SUSE)
USN-3096-1 (UBUNTU)
SUSE-SU-2016:2094 (SUSE)
20160428 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: April 2016 (CISCO)
20160429 [slackware-security] ntp (SSA:2016-120-01) (BUGTRAQ)
openSUSE-SU-2016:1329 (SUSE)
SUSE-SU-2016:1568 (SUSE)
SUSE-SU-2016:1471 (SUSE)
20160429 [slackware-security] ntp (SSA:2016-120-01) (BUGTRAQ)
http://packetstormsecurity.com/files/136864/Slackware-Security-Advisory-ntp-Updates.html (MISC)
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11 (MISC)
https://support.f5.com/csp/article/K20804323 (CONFIRM)
FEDORA-2016-ed8c6c0426 (FEDORA)
FEDORA-2016-5b2eb0bf9c (FEDORA)
DSA-3629 (DEBIAN)
CVE: CVE-2016-1550
CVE: CVE-2016-1550
Id:
CVE-2016-1550
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1550
Comment
: An exploitable vulnerability exists in the message authentication functionality of libntp in ntp 4.2.8p4 and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92. An attacker can send a series of crafted messages to attempt to recover the message digest key.
CVSSv2 Score:
5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
NONE
Availability impact:
NONE
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSSv3 Score:
5.3
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
LOW
Integrity impact:
NONE
Availability impact:
NONE
CVSSv3 Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE:
200 (Information Exposure)
References:
http://www.talosintelligence.com/reports/TALOS-2016-0084/ (MISC)
88261 (BID)
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html (CONFIRM)
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html (CONFIRM)
GLSA-201607-15 (GENTOO)
1035705 (SECTRACK)
DSA-3629 (DEBIAN)
https://security.netapp.com/advisory/ntap-20171004-0002/ (CONFIRM)
FreeBSD-SA-16:16 (FREEBSD)
RHSA-2016:1141 (REDHAT)
RHSA-2016:1552 (REDHAT)
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf (CONFIRM)
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 (MISC)
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf (CONFIRM)
http://packetstormsecurity.com/files/136864/Slackware-Security-Advisory-ntp-Updates.html (MISC)
SUSE-SU-2016:1568 (SUSE)
openSUSE-SU-2016:1329 (SUSE)
20160429 [slackware-security] ntp (SSA:2016-120-01) (BUGTRAQ)
openSUSE-SU-2016:1423 (SUSE)
DSA-3629 (DEBIAN)
VU#718152 (CERT-VN)
FEDORA-2016-5b2eb0bf9c (FEDORA)
USN-3096-1 (UBUNTU)
SUSE-SU-2016:1278 (SUSE)
SUSE-SU-2016:1291 (SUSE)
SUSE-SU-2016:1912 (SUSE)
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11 (MISC)
FEDORA-2016-ed8c6c0426 (FEDORA)
SUSE-SU-2016:1471 (SUSE)
SUSE-SU-2016:2094 (SUSE)
https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0084 (MISC)
20160428 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: April 2016 (CISCO)
20160429 [slackware-security] ntp (SSA:2016-120-01) (BUGTRAQ)
https://www.arista.com/en/support/advisories-notices/security-advisories/1332-security-advisory-19 (MISC)
CVE: CVE-2016-2516
CVE: CVE-2016-2516
Id:
CVE-2016-2516
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2516
Comment
: NTP before 4.2.8p7 and 4.3.x before 4.3.92, when mode7 is enabled, allows remote attackers to cause a denial of service (ntpd abort) by using the same IP address multiple times in an unconfig directive.
CVSSv2 Score:
7.1
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:N/AC:M/Au:N/C:N/I:N/A:C
CVSSv3 Score:
5.3
Attack vector:
NETWORK
Attack complexity:
HIGH
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE:
20 (Improper Input Validation)
References:
VU#718152 (CERT-VN)
http://support.ntp.org/bin/view/Main/NtpBug3011 (CONFIRM)
88180 (BID)
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html (CONFIRM)
GLSA-201607-15 (GENTOO)
1035705 (SECTRACK)
DSA-3629 (DEBIAN)
https://security.netapp.com/advisory/ntap-20171004-0002/ (CONFIRM)
FreeBSD-SA-16:16 (FREEBSD)
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