Code Affecting ntp package, versions <1:4.2.6.p5+dfsg-6


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.57% (78th percentile)

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  • Snyk IDSNYK-DEBIAN9-NTP-372759
  • published8 Apr 2015
  • disclosed8 Apr 2015

Introduced: 8 Apr 2015

CVE-2015-1798  (opens in a new tab)
CWE-17  (opens in a new tab)

How to fix?

Upgrade Debian:9 ntp to version 1:4.2.6.p5+dfsg-6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ntp package and not the ntp package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

The symmetric-key feature in the receive function in ntp_proto.c in ntpd 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.

References

CVSS Scores

version 3.1