CVE-2016-5117

OpenNTPD before 6.0p1 does not validate the CN for HTTPS constraint requests, which allows remote attackers to bypass the man-in-the-middle mitigations via a crafted timestamp constraint with a valid certificate.

CVSS v3.0 5.9 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.9^/10

CVSS v3.0 : MEDIUM

Vector : AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:N/I:P/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
http://www.openwall.com/lists/oss-security/2016/05/29/6	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/05/23/2	Mailing List Third Party Advisory
http://www.openntpd.org/txt/release-6.0p1.txt	Vendor Advisory
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/ntpd/constraint.c.diff?r1=1.27&r2=1.28	Patch

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Configurations

Configuration 1 (hide)

cpe:2.3:a:openntpd:openntpd:*:*:*:*:*:*:*:*

Information

Published : 2017-01-31 11:59

Updated : 2017-02-24 11:26

NVD link : CVE-2016-5117

Mitre link : CVE-2016-5117

JSON object : View

CWE

CWE-254

7PK - Security Features

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Products Affected

openntpd

openntpd

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