CVE-2015-1798

CVE Details

Release Date:	2015-04-07
Impact:	Low	What is this?

Description

The symmetric-key feature in the receive function in ntp_proto.c inntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC.

See more information about CVE-2015-1798 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v2 metrics

Base Score:	2.6
Vector String:	AV:N/AC:H/Au:N/C:N/I:P/A:N
Version:	2.0
Attack Vector:	Network
Attack Complexity:	High
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	Partial
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (ntp)	ELSA-2015-1459	2015-07-28
Oracle Linux version 7 (ntp)	ELSA-2015-2231	2015-11-23
Oracle VM version 3.3 (ntp)	OVMSA-2015-0102	2015-07-29