CVE-2015-8138
published 2017-01-30CVE-2015-8138: NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero.
PriorityP336medium5.3CVSS 3.0
AVNACLPRNUINSUCNILAN
EPSS
6.25%
92.8th percentile
NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero.
Affected
98 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | ntp | < ntp 1:4.2.8p9+dfsg-1 (bullseye) | ntp 1:4.2.8p9+dfsg-1 (bullseye) |
| debian | ntp | < ntp 1:4.2.8p7+dfsg-1 (bullseye) | ntp 1:4.2.8p7+dfsg-1 (bullseye) |
| ntp | ntp | <= 4.2.8 | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
| ntp | ntp | — | — |
CVSS provenance
nvdv3.05.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
osv6.5MEDIUM
vendor_cisco6.5MEDIUM
vendor_ubuntu6.5MEDIUM
vendor_debian5.3MEDIUM
vendor_redhat5.3MEDIUM
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GHSA
GHSA-5mf2-6mvq-v64v: NTP before 4
ghsa_unreviewed·2022-05-13
CVE-2015-8138 [MEDIUM] CWE-20 GHSA-5mf2-6mvq-v64v: NTP before 4
NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero.
GHSA
GHSA-27gj-3475-hjqq: NTP before 4
ghsa_unreviewed·2022-05-13·CVSS 5.3
CVE-2016-7431 [MEDIUM] CWE-20 GHSA-27gj-3475-hjqq: NTP before 4
NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protection mechanism via an origin timestamp of zero. NOTE: this vulnerability exists because of a CVE-2015-8138 regression.
OSV
CVE-2015-8138: NTP before 4
osv·2017-01-30·CVSS 5.3
CVE-2015-8138 [MEDIUM] CVE-2015-8138: NTP before 4
NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero.
OSV
CVE-2016-7431: NTP before 4
osv·2017-01-13·CVSS 5.3
CVE-2016-7431 [MEDIUM] CVE-2016-7431: NTP before 4
NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protection mechanism via an origin timestamp of zero. NOTE: this vulnerability exists because of a CVE-2015-8138 regression.
OSV
ntp vulnerabilities
osv·2016-10-05·CVSS 6.5
CVE-2015-7973 [MEDIUM] ntp vulnerabilities
ntp vulnerabilities
Aanchal Malhotra discovered that NTP incorrectly handled authenticated
broadcast mode. A remote attacker could use this issue to perform a replay
attack. (CVE-2015-7973)
Matt Street discovered that NTP incorrectly verified peer associations of
symmetric keys. A remote attacker could use this issue to perform an
impersonation attack. (CVE-2015-7974)
Jonathan Gardner discovered that the NTP ntpq utility incorrectly handled
memory. An attacker could possibly use this issue to cause ntpq to crash,
resulting in a denial of service. This issue only affected Ubuntu 16.04
LTS. (CVE-2015-7975)
Jonathan Gardner discovered that the NTP ntpq utility incorrectly handled
dangerous characters in filenames. An attacker could possibly use this
issue to overwrite arbitrary files. (CV
CISA ICS
Siemens SIMATIC NET CP 443-1 OPC UA
cisa_ics·2021-06-08·CVSS 5.9
[MEDIUM] Siemens SIMATIC NET CP 443-1 OPC UA
## Archived Content In an effort to keep CISA.gov current, the archive contains outdated information that may not reflect current policy or programs.
ICS Advisory
##
Siemens SIMATIC NET CP 443-1 OPC UA
Last RevisedJune 08, 2021
Alert CodeICSA-21-159-11
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: SIMATIC NET CP 443-1 OPC UA
- Vulnerabilities: Improper Input Validation, Improper Restriction of Operations within the Bounds of a Memory Buffer, Incorrect Calculation, Classic Buffer Overflow, Improper Authentication, Race Condition, Data Processing Errors, Exposure of Sensitive Information to an Unauthorized Actor, Out-of-bounds Read
## 2. RISK EVALUATION
Succes
CISA ICS
Siemens TIM 4R-IE Devices
cisa_ics·2021-04-13·CVSS 7.5
[HIGH] Siemens TIM 4R-IE Devices
## Archived Content In an effort to keep CISA.gov current, the archive contains outdated information that may not reflect current policy or programs.
ICS Advisory
##
Siemens TIM 4R-IE Devices
Last RevisedApril 13, 2021
Alert CodeICSA-21-103-11
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: TIM 4R-IE
- Vulnerabilities: Incorrect Type Conversion or Cast, Improper Input Validation, Improper Authentication, Security Features, Null Pointer Dereference, Data Processing Errors, Exposure of Sensitive Information to an Unauthorized Actor, Race Condition
## 2. RISK EVALUATION
Successful exploitation of these vulnerabilities could compromise the confidentiality, integri
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016
vendor_cisco·2016-11-23·CVSS 5.3
CVE-2015-8138 [MEDIUM] CWE-119 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server.
On November 21, 2016, the NTP Consortium of the Network Time Foundation released a security notice that details ten issues regarding DoS vulnerabilities and logic issues that may allow an attacker to shift a system's time.
The new vulnerabilities disclosed in this document are as follows:
Network Time Protocol Trap Service Denial of S
Red Hat
ntp: Zero Origin timestamp regression
vendor_redhat·2016-11-21·CVSS 5.3
CVE-2016-7431 [MEDIUM] CWE-20 ntp: Zero Origin timestamp regression
ntp: Zero Origin timestamp regression
NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protection mechanism via an origin timestamp of zero. NOTE: this vulnerability exists because of a CVE-2015-8138 regression.
Statement: This issue did not affect the versions of ntp as shipped with Red Hat Enterprise Linux 5, 6 and 7.
Package: ntp (Red Hat Enterprise Linux 5) - Not affected
Package: ntp (Red Hat Enterprise Linux 6) - Not affected
Package: ntp (Red Hat Enterprise Linux 7) - Not affected
Ubuntu
NTP vulnerabilities
vendor_ubuntu·2016-10-05·CVSS 6.5
CVE-2015-7973 [MEDIUM] NTP vulnerabilities
Title: NTP vulnerabilities
Summary: Several security issues were fixed in NTP.
Aanchal Malhotra discovered that NTP incorrectly handled authenticated
broadcast mode. A remote attacker could use this issue to perform a replay
attack. (CVE-2015-7973)
Matt Street discovered that NTP incorrectly verified peer associations of
symmetric keys. A remote attacker could use this issue to perform an
impersonation attack. (CVE-2015-7974)
Jonathan Gardner discovered that the NTP ntpq utility incorrectly handled
memory. An attacker could possibly use this issue to cause ntpq to crash,
resulting in a denial of service. This issue only affected Ubuntu 16.04
LTS. (CVE-2015-7975)
Jonathan Gardner discovered that the NTP ntpq utility incorrectly handled
dangerous characters in filenames. An attacker cou
Palo Alto
PAN-SA-2016-0019 NTP Vulnerabilities
vendor_paloalto·2016-08-15·CVSS 6.5
CVE-2015-8158 [MEDIUM] CWE-400 PAN-SA-2016-0019 NTP Vulnerabilities
PAN-SA-2016-0019 NTP Vulnerabilities
The open source ntp project has been found to contain several vulnerabilities (CVE-2015-8158, CVE-2015-8138, CVE-2015-7979, CVE-2015-7978, CVE-2015-7977, CVE-2015-7976, CVE-2015-7975, CVE-2015-7974, CVE-2015-7973, all released in January 2016). Palo Alto... Also Palo Alto Networks make use of the
CVEs: CVE-2015-7973, CVE-2015-7974, CVE-2015-7975, CVE-2015-7976, CVE-2015-7977, CVE-2015-7978, CVE-2015-7979, CVE-2015-8138, CVE-2015-8158
Affected products: PAN-OS
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: April 2016
vendor_cisco·2016-04-28·CVSS 5.3
CVE-2015-7704 [MEDIUM] Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: April 2016
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: April 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server.
On April 26, 2016, the NTP Consortium of the Network Time Foundation released a security notice that details 11 issues regarding DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a system's time. Two of the vulnerabilities disclosed in the NTP security notice address issues that
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco·2016-01-28·CVSS 6.5
CVE-2015-7973 [MEDIUM] CWE-119 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server.
On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows:
CVE-2015-7973: N
BSD
FreeBSD-SA-16:09.ntp: Multiple vulnerabilities of ntp
bsd_advisories·2016-01-27·CVSS 6.5
CVE-2015-7973 [MEDIUM] FreeBSD-SA-16:09.ntp: Multiple vulnerabilities of ntp
FreeBSD-SA-16:09.ntp Security Advisory
The FreeBSD Project
Topic: Multiple vulnerabilities of ntp
Category: contrib
Module: ntp
Announced: 2016-01-27
Credits: Cisco ASIG / Network Time Foundation
Affects: All supported versions of FreeBSD.
Corrected: 2016-01-22 15:55:21 UTC (stable/10, 10.2-STABLE)
2016-01-27 07:41:31 UTC (releng/10.2, 10.2-RELEASE-p11)
2016-01-27 07:41:31 UTC (releng/10.1, 10.1-RELEASE-p28)
2016-01-22 15:56:35 UTC (stable/9, 9.3-STABLE)
2016-01-27 07:42:11 UTC (releng/9.3, 9.3-RELEASE-p35)
CVE Name: CVE-2015-7973, CVE-2015-7974, CVE-2015-7975, CVE-2015-7976,
CVE-2015-7977, CVE-2015-7978, CVE-2015-7979, CVE-2015-8138,
CVE-2015-8139, CVE-2015-8140, CVE-2015-8158
For general information regarding FreeBSD Security Advisories,
including descriptions of the fields above, sec
Red Hat
ntp: missing check for zero originate timestamp
vendor_redhat·2016-01-20·CVSS 5.3
CVE-2015-8138 [MEDIUM] CWE-294 ntp: missing check for zero originate timestamp
ntp: missing check for zero originate timestamp
NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero.
It was discovered that ntpd as a client did not correctly check the originate timestamp in received packets. A remote attacker could use this flaw to send a crafted packet to an ntpd client that would effectively disable synchronization with the server, or push arbitrary offset/delay measurements to modify the time on the client.
Statement: This issue did not affect the versions of ntp as shipped with Red Hat Enterprise Linux 5 as they do not include the affected code, which was introduced in version 4.2.6 of NTP.
Package: ntp (Red Hat Enterprise Linux 5) - Not affected
Debian
CVE-2016-7431: ntp - NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protec...
vendor_debian·2016·CVSS 5.3
CVE-2016-7431 [MEDIUM] CVE-2016-7431: ntp - NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protec...
NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protection mechanism via an origin timestamp of zero. NOTE: this vulnerability exists because of a CVE-2015-8138 regression.
Scope: local
bullseye: resolved (fixed in 1:4.2.8p9+dfsg-1)
Debian
CVE-2015-8138: ntp - NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the...
vendor_debian·2015·CVSS 5.3
CVE-2015-8138 [MEDIUM] CVE-2015-8138: ntp - NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the...
NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero.
Scope: local
bullseye: resolved (fixed in 1:4.2.8p7+dfsg-1)
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco
CVE-2015-7976 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
CVE-2015-7976: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows: CVE-
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco
CVE-2015-8139 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
CVE-2015-8139: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows: CVE-
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco
CVE-2015-7973 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
CVE-2015-7973: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows: CVE-
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco
CVE-2015-7974 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
CVE-2015-7974: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows: CVE-
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco
CVE-2015-7977 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
CVE-2015-7977: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows: CVE-
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco
CVE-2015-8158 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
CVE-2015-8158: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows: CVE-
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco
CVE-2015-7978 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
CVE-2015-7978: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows: CVE-
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco
CVE-2015-8140 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
CVE-2015-8140: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows: CVE-
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco
CVE-2015-7979 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
CVE-2015-7979: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows: CVE-
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco
CVE-2015-7975 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
CVE-2015-7975: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows: CVE-
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
vendor_cisco
CVE-2015-8138 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
CVE-2015-8138: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016
Multiple Cisco products incorporate a version of the Network Time Protocol daemon (ntpd) package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. On January 19, 2016, NTP Consortium at Network Time Foundation released a security advisory detailing 12 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may allow an attacker to shift a client's time. The vulnerabilities covered in this document are as follows: CVE-
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-9042 ntp: DoS via origin timestamp check functionality
bugzilla·2017-03-20·CVSS 5.3
CVE-2016-9042 [MEDIUM] CVE-2016-9042 ntp: DoS via origin timestamp check functionality
CVE-2016-9042 ntp: DoS via origin timestamp check functionality
An exploitable denial of service vulnerability exists in the origin timestamp check functionality of ntpd 4.2.8p9. A specially crafted unauthenticated network packet can be used to reset the expected origin timestamp for target peers. Legitimate replies from targeted peers will fail the origin timestamp check (TEST2) causing the reply to be dropped and creating a denial of service condition. This vulnerability can only be exploited if the attacker can spoof all of the servers.
Affects: ntp-4.0.9, up to but not including ntp-4.2.8p10
Mitigations:
Implement BCP-38.
Configure enough servers/peers that an attacker cannot target all of your time sources.
Properly monitor your ntpd instances, and auto-restart ntpd (without -g)
Bugzilla
CVE-2015-7974 CVE-2015-8138 CVE-2015-7973 CVE-2015-7975 CVE-2015-7976 CVE-2015-7977 CVE-2015-7978 CVE-2015-7979 CVE-2015-8158 CVE-2015-8139 CVE-2015-8140 ntp: various flaws [fedora-all]
bugzilla·2016-01-20·CVSS 6.5
CVE-2015-7974 [MEDIUM] CVE-2015-7974 CVE-2015-8138 CVE-2015-7973 CVE-2015-7975 CVE-2015-7976 CVE-2015-7977 CVE-2015-7978 CVE-2015-7979 CVE-2015-8158 CVE-2015-8139 CVE-2015-8140 ntp: various flaws [fedora-all]
CVE-2015-7974 CVE-2015-8138 CVE-2015-7973 CVE-2015-7975 CVE-2015-7976 CVE-2015-7977 CVE-2015-7978 CVE-2015-7979 CVE-2015-8158 CVE-2015-8139 CVE-2015-8140 ntp: various flaws [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed i
Bugzilla
CVE-2015-8138 ntp: missing check for zero originate timestamp
bugzilla·2016-01-18·CVSS 7.5
CVE-2015-8138 [HIGH] CVE-2015-8138 ntp: missing check for zero originate timestamp
CVE-2015-8138 ntp: missing check for zero originate timestamp
The TEST2 check of the originate timestamp in received packets, which requires the timestamp to match the value of the peer->aorg variable and which is supposed to be random to prevent spoofing attacks has been found to be faulty.
When ntpd receives a reply, it clears the peer->aorg variable to prevent a replay attack. This makes the value known to the attacker and a spoofed packet with a zero originate timestamp will pass the TEST2.
This means an off-path attacker can disrupt the synchronization with KoD packets, similar to CVE-2015-7704, or they can push arbitrary offset/delay measurements to the client, taking full control over the clock or cause ntpd to exit with an offset larger than the panic threshold.
Discussion:
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2017-01-30
Published