CVE-2015-7853

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative input value.

El parámetro datalen en el driver reflock en NTP 4.2.x en versiones anteriores a la 4.2.8p4, y 4.3.x en versiones anteriores a la 4.3.77 permite que atacantes remotos ejecuten código arbitrario o provoquen una denegación de servicio utilizando un valor de entrada negativo.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-10-16 CVE Reserved
2015-10-21 CVE Published
2024-08-06 CVE Updated
2024-11-07 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (28)

URL	Tag	Source
http://packetstormsecurity.com/files/134082/FreeBSD-Security-Advisory-ntp-Authentication-Bypass.html	X_refsource_misc
http://packetstormsecurity.com/files/134137/Slackware-Security-Advisory-ntp-Updates.html	X_refsource_misc
http://www.securityfocus.com/archive/1/536737/100/0/threaded	Mailing List
http://www.securityfocus.com/archive/1/536760/100/0/threaded	Mailing List
http://www.securityfocus.com/archive/1/536796/100/0/threaded	Mailing List
http://www.securityfocus.com/archive/1/536833/100/0/threaded	Mailing List
http://www.securityfocus.com/archive/1/archive/1/536737/100/100/threaded	Mailing List
http://www.securityfocus.com/archive/1/archive/1/536760/100/100/threaded	Mailing List
http://www.securityfocus.com/archive/1/archive/1/536796/100/100/threaded	Mailing List
http://www.securityfocus.com/archive/1/archive/1/536833/100/100/threaded	Mailing List
http://www.securityfocus.com/bid/77273	Third Party Advisory
http://www.securitytracker.com/id/1033951	Third Party Advisory
http://www.talosintel.com/vulnerability-reports	X_refsource_misc
https://bto.bluecoat.com/security-advisory/sa103	X_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1274262	Issue Tracking
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf	X_refsource_confirm
https://security.netapp.com/advisory/ntap-20171004-0001	Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11	X_refsource_misc

URL	Date	SRC

URL	Date	SRC
http://support.ntp.org/bin/view/Main/NtpBug2920	2021-07-16

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html	2021-07-16
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html	2021-07-16
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html	2021-07-16
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html	2021-07-16
http://lists.opensuse.org/opensuse-updates/2015-11/msg00093.html	2021-07-16
http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html	2021-07-16
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151021-ntp	2021-07-16
http://www.ubuntu.com/usn/USN-2783-1	2021-07-16
https://security.gentoo.org/glsa/201607-15	2021-07-16

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"				>= 4.2.0 < 4.2.8 Search vendor "Ntp" for product "Ntp" and version " >= 4.2.0 < 4.2.8"		-		Affected
Ntp Search vendor "Ntp"		Ntp Search vendor "Ntp" for product "Ntp"				>= 4.3.0 < 4.3.77 Search vendor "Ntp" for product "Ntp" and version " >= 4.3.0 < 4.3.77"		-		Affected
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"		-		Affected
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"		p1		Affected
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"		p1-beta1		Affected
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"		p1-beta2		Affected
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"		p1-beta3		Affected
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"		p1-beta4		Affected
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"		p1-beta5		Affected
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"		p1-rc1		Affected
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"		p1-rc2		Affected
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"		p2		Affected
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"		p2-rc1		Affected
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"		p2-rc2		Affected
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"		p2-rc3		Affected
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"		p3		Affected
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"		p3-rc1		Affected
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"		p3-rc2		Affected
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"		p3-rc3		Affected
Netapp Search vendor "Netapp"		Oncommand Balance Search vendor "Netapp" for product "Oncommand Balance"				-		-		Affected
Netapp Search vendor "Netapp"		Oncommand Performance Manager Search vendor "Netapp" for product "Oncommand Performance Manager"				-		-		Affected
Netapp Search vendor "Netapp"		Oncommand Unified Manager Search vendor "Netapp" for product "Oncommand Unified Manager"				-		clustered_data_ontap		Affected
Netapp Search vendor "Netapp"		Clustered Data Ontap Search vendor "Netapp" for product "Clustered Data Ontap"				-		-		Affected
Netapp Search vendor "Netapp"		Data Ontap Search vendor "Netapp" for product "Data Ontap"				-		7-mode		Affected