CVE-2015-8138

ntp: missing check for zero originate timestamp

Severity Score

5.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

NTP en versiones anteriores a 4.2.8p6 y 4.3.x en versiones anteriores a 4.3.90 permite a atacantes remotos eludir la validación de marca horaria de origen a través de un paquete con una marca horaria de origen puesta a cero.

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.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-11-13 CVE Reserved
2016-01-25 CVE Published
2023-05-06 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-294: Authentication Bypass by Capture-replay

CAPEC

References (34)

URL	Tag	Source
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html	X_refsource_confirm
http://www.securityfocus.com/bid/81811	Third Party Advisory
http://www.securitytracker.com/id/1034782	Third Party Advisory
https://bto.bluecoat.com/security-advisory/sa113	Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf	X_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf	X_refsource_confirm
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us	X_refsource_confirm
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us	X_refsource_confirm
https://security.netapp.com/advisory/ntap-20171004-0002	X_refsource_confirm
https://security.netapp.com/advisory/ntap-20171031-0001	X_refsource_confirm
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11	X_refsource_misc
https://www.arista.com/en/support/advisories-notices/security-advisories/1332-security-advisory-19	X_refsource_misc
https://www.kb.cert.org/vuls/id/718152	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177507.html	2021-11-17
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176434.html	2021-11-17
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html	2021-11-17
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html	2021-11-17
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html	2021-11-17
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html	2021-11-17
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html	2021-11-17
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html	2021-11-17
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html	2021-11-17
http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html	2021-11-17
http://rhn.redhat.com/errata/RHSA-2016-0063.html	2021-11-17
http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_NTP_4_2_8p7_Security	2021-11-17
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpd	2021-11-17
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160428-ntpd	2021-11-17
http://www.debian.org/security/2016/dsa-3629	2021-11-17
http://www.ubuntu.com/usn/USN-3096-1	2021-11-17
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:09.ntp.asc	2021-11-17
https://security.gentoo.org/glsa/201607-15	2021-11-17
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161123-ntpd	2021-11-17
https://access.redhat.com/security/cve/CVE-2015-8138	2016-01-25
https://bugzilla.redhat.com/show_bug.cgi?id=1299442	2016-01-25

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				<= 4.2.8 Search vendor "Ntp" for product "Ntp" and version " <= 4.2.8"		p5		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.0 Search vendor "Ntp" for product "Ntp" and version "4.3.0"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.1 Search vendor "Ntp" for product "Ntp" and version "4.3.1"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.2 Search vendor "Ntp" for product "Ntp" and version "4.3.2"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.3 Search vendor "Ntp" for product "Ntp" and version "4.3.3"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.4 Search vendor "Ntp" for product "Ntp" and version "4.3.4"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.5 Search vendor "Ntp" for product "Ntp" and version "4.3.5"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.6 Search vendor "Ntp" for product "Ntp" and version "4.3.6"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.7 Search vendor "Ntp" for product "Ntp" and version "4.3.7"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.8 Search vendor "Ntp" for product "Ntp" and version "4.3.8"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.10 Search vendor "Ntp" for product "Ntp" and version "4.3.10"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.11 Search vendor "Ntp" for product "Ntp" and version "4.3.11"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.12 Search vendor "Ntp" for product "Ntp" and version "4.3.12"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.13 Search vendor "Ntp" for product "Ntp" and version "4.3.13"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.14 Search vendor "Ntp" for product "Ntp" and version "4.3.14"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.15 Search vendor "Ntp" for product "Ntp" and version "4.3.15"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.16 Search vendor "Ntp" for product "Ntp" and version "4.3.16"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.17 Search vendor "Ntp" for product "Ntp" and version "4.3.17"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.18 Search vendor "Ntp" for product "Ntp" and version "4.3.18"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.19 Search vendor "Ntp" for product "Ntp" and version "4.3.19"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.20 Search vendor "Ntp" for product "Ntp" and version "4.3.20"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.21 Search vendor "Ntp" for product "Ntp" and version "4.3.21"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.22 Search vendor "Ntp" for product "Ntp" and version "4.3.22"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.23 Search vendor "Ntp" for product "Ntp" and version "4.3.23"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.24 Search vendor "Ntp" for product "Ntp" and version "4.3.24"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.25 Search vendor "Ntp" for product "Ntp" and version "4.3.25"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.26 Search vendor "Ntp" for product "Ntp" and version "4.3.26"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.27 Search vendor "Ntp" for product "Ntp" and version "4.3.27"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.28 Search vendor "Ntp" for product "Ntp" and version "4.3.28"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.29 Search vendor "Ntp" for product "Ntp" and version "4.3.29"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.30 Search vendor "Ntp" for product "Ntp" and version "4.3.30"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.31 Search vendor "Ntp" for product "Ntp" and version "4.3.31"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.32 Search vendor "Ntp" for product "Ntp" and version "4.3.32"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.33 Search vendor "Ntp" for product "Ntp" and version "4.3.33"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.34 Search vendor "Ntp" for product "Ntp" and version "4.3.34"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.35 Search vendor "Ntp" for product "Ntp" and version "4.3.35"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.36 Search vendor "Ntp" for product "Ntp" and version "4.3.36"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.37 Search vendor "Ntp" for product "Ntp" and version "4.3.37"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.38 Search vendor "Ntp" for product "Ntp" and version "4.3.38"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.39 Search vendor "Ntp" for product "Ntp" and version "4.3.39"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.40 Search vendor "Ntp" for product "Ntp" and version "4.3.40"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.41 Search vendor "Ntp" for product "Ntp" and version "4.3.41"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.42 Search vendor "Ntp" for product "Ntp" and version "4.3.42"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.43 Search vendor "Ntp" for product "Ntp" and version "4.3.43"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.44 Search vendor "Ntp" for product "Ntp" and version "4.3.44"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.45 Search vendor "Ntp" for product "Ntp" and version "4.3.45"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.46 Search vendor "Ntp" for product "Ntp" and version "4.3.46"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.47 Search vendor "Ntp" for product "Ntp" and version "4.3.47"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.48 Search vendor "Ntp" for product "Ntp" and version "4.3.48"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.49 Search vendor "Ntp" for product "Ntp" and version "4.3.49"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.50 Search vendor "Ntp" for product "Ntp" and version "4.3.50"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.51 Search vendor "Ntp" for product "Ntp" and version "4.3.51"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.52 Search vendor "Ntp" for product "Ntp" and version "4.3.52"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.53 Search vendor "Ntp" for product "Ntp" and version "4.3.53"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.54 Search vendor "Ntp" for product "Ntp" and version "4.3.54"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.55 Search vendor "Ntp" for product "Ntp" and version "4.3.55"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.56 Search vendor "Ntp" for product "Ntp" and version "4.3.56"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.57 Search vendor "Ntp" for product "Ntp" and version "4.3.57"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.58 Search vendor "Ntp" for product "Ntp" and version "4.3.58"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.59 Search vendor "Ntp" for product "Ntp" and version "4.3.59"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.60 Search vendor "Ntp" for product "Ntp" and version "4.3.60"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.61 Search vendor "Ntp" for product "Ntp" and version "4.3.61"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.62 Search vendor "Ntp" for product "Ntp" and version "4.3.62"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.63 Search vendor "Ntp" for product "Ntp" and version "4.3.63"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.64 Search vendor "Ntp" for product "Ntp" and version "4.3.64"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.65 Search vendor "Ntp" for product "Ntp" and version "4.3.65"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.66 Search vendor "Ntp" for product "Ntp" and version "4.3.66"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.67 Search vendor "Ntp" for product "Ntp" and version "4.3.67"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.68 Search vendor "Ntp" for product "Ntp" and version "4.3.68"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.69 Search vendor "Ntp" for product "Ntp" and version "4.3.69"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.70 Search vendor "Ntp" for product "Ntp" and version "4.3.70"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.71 Search vendor "Ntp" for product "Ntp" and version "4.3.71"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.72 Search vendor "Ntp" for product "Ntp" and version "4.3.72"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.73 Search vendor "Ntp" for product "Ntp" and version "4.3.73"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.74 Search vendor "Ntp" for product "Ntp" and version "4.3.74"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.75 Search vendor "Ntp" for product "Ntp" and version "4.3.75"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.76 Search vendor "Ntp" for product "Ntp" and version "4.3.76"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.77 Search vendor "Ntp" for product "Ntp" and version "4.3.77"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.78 Search vendor "Ntp" for product "Ntp" and version "4.3.78"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.79 Search vendor "Ntp" for product "Ntp" and version "4.3.79"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.80 Search vendor "Ntp" for product "Ntp" and version "4.3.80"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.81 Search vendor "Ntp" for product "Ntp" and version "4.3.81"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.82 Search vendor "Ntp" for product "Ntp" and version "4.3.82"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.83 Search vendor "Ntp" for product "Ntp" and version "4.3.83"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.84 Search vendor "Ntp" for product "Ntp" and version "4.3.84"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.85 Search vendor "Ntp" for product "Ntp" and version "4.3.85"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.86 Search vendor "Ntp" for product "Ntp" and version "4.3.86"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.87 Search vendor "Ntp" for product "Ntp" and version "4.3.87"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.88 Search vendor "Ntp" for product "Ntp" and version "4.3.88"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				4.3.89 Search vendor "Ntp" for product "Ntp" and version "4.3.89"		-		Affected