CVE-2015-1799 — Improper Authentication in NTP

CWE-17CWE-287 — Improper AuthenticationCWE-39916 documents11 sources
Severity
4.3MEDIUMNVD
OSV1.8
EPSS
0.6%
top 29.48%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
NTPDebian NTPApple OS X Yosemite V10.10.4 AND Security Update 2015-005+1 more
Timeline
PublishedApr 8
Latest updateMay 14

Description

The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 3.x and 4.x before 4.2.8p2 performs state-variable updates upon receiving certain invalid packets, which makes it easier for man-in-the-middle attackers to cause a denial of service (synchronization loss) by spoofing the source IP address of a peer.

CVSS vector

AV:A/AC:M/C:N/I:P/A:PExploitability: 5.5 | Impact: 4.9

Affected Packages6 packages

▶debiandebian/ntp< ntp 1:4.2.6.p5+dfsg-6 (bullseye)
▶Debianntp/ntp< 1:4.2.6.p5+dfsg-6
▶Ubuntuntp/ntp< 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3
▶NVDntp/ntp4.2.7p444

🔴Vulnerability Details

3
GHSA
GHSA-q9p8-4cvj-q5fj: The symmetric-key feature in the receive function in ntp_proto↗2022-05-14
▶
OSV
ntp vulnerabilities↗2015-04-13
▶
OSV
CVE-2015-1799: The symmetric-key feature in the receive function in ntp_proto↗2015-04-08
▶

📋Vendor Advisories

10
CISA ICS
Rockwell Automation Stratix 5900↗2017-05-10
▶
Ubuntu
NTP vulnerabilities↗2015-04-13
▶
Cisco
Multiple Vulnerabilities in ntpd (April 2015) Affecting Cisco Products↗2015-04-08
▶
Cisco
Network Time Protocol Daemon Symmetric Mode Packet Processing Denial of Service Vulnerability↗2015-04-08
▶
BSD
FreeBSD-SA-15:07.ntp: Multiple vulnerabilities of ntp↗2015-04-07
▶

💬Community

2
Bugzilla
CVE-2015-1798 CVE-2015-1799 ntp: various flaws [fedora-all]↗2015-04-07
▶
Bugzilla
CVE-2015-1799 ntp: authentication doesn't protect symmetric associations against DoS attacks↗2015-03-06
▶