CVE-2015-8138

MEDIUM

NTP <4.2.8p6, <4.3.90 - Auth Bypass

Title source: llm

Description

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.

References (32)

[Vendor Advisory] https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf

[Third Party Advisory] http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177507.html

[Third Party Advisory] http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176434.html

[Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html

[Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html

[Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html

[Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html

[Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html

[Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html

[Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html

[Third Party Advisory] http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html

[Third Party Advisory] http://rhn.redhat.com/errata/RHSA-2016-0063.html

[Vendor Advisory] http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_NTP_4_2_8p7_Security

[Third Party Advisory] http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpd

[Third Party Advisory] http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160428-ntpd

[Third Party Advisory] http://www.debian.org/security/2016/dsa-3629

[Vendor Advisory] http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/81811

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1034782

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3096-1

... and 12 more

Scores

CVSS v3 5.3

EPSS 0.0128

EPSS Percentile 79.4%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Classification

CWE

CWE-20

Status published

Affected Products (50)

ntp/ntp < 4.2.8

ntp/ntp

... and 35 more

Timeline

Published Jan 30, 2017

Tracked Since Feb 18, 2026