What is the severity of CVE-2015-1798?

CVE-2015-1798 has a severity rating of medium, as it allows for man-in-the-middle attacks.

How do I fix CVE-2015-1798?

To fix CVE-2015-1798, you should upgrade to NTP version 4.2.8p2 or later.

Which versions of NTP are affected by CVE-2015-1798?

NTP versions prior to 4.2.8p2, specifically 4.2.7p444 and earlier, are affected by CVE-2015-1798.

What type of attack does CVE-2015-1798 facilitate?

CVE-2015-1798 facilitates man-in-the-middle attacks by allowing attackers to spoof packets.

Is there a workaround for CVE-2015-1798 until I can apply a patch?

The best approach is to implement secure configurations and monitoring, but upgrading is ultimately recommended as a fix.

Vulnerability/
CVE-2015-1798

low

1.8

CWE

8/4/2015

12/2/2023

CVE-2015-1798

First published: Wed Apr 08 2015(Updated: )

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.

Credit: secalert@redhat.com

Affected Software	Affected Version	How to fix
NTP	<=4.2.7p444

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2015-1798?
CVE-2015-1798 has a severity rating of medium, as it allows for man-in-the-middle attacks.
How do I fix CVE-2015-1798?
To fix CVE-2015-1798, you should upgrade to NTP version 4.2.8p2 or later.
Which versions of NTP are affected by CVE-2015-1798?
NTP versions prior to 4.2.8p2, specifically 4.2.7p444 and earlier, are affected by CVE-2015-1798.
What type of attack does CVE-2015-1798 facilitate?
CVE-2015-1798 facilitates man-in-the-middle attacks by allowing attackers to spoof packets.
Is there a workaround for CVE-2015-1798 until I can apply a patch?
The best approach is to implement secure configurations and monitoring, but upgrading is ultimately recommended as a fix.

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agent/description
agent/event
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collector/nvd-index
agent/software-canonical-lookup-request
vendor/ntp
canonical/ntp
version/ntp/4.2.7p444

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Frequently Asked Questions

What is the severity of CVE-2015-1798?
CVE-2015-1798 has a severity rating of medium, as it allows for man-in-the-middle attacks.
How do I fix CVE-2015-1798?
To fix CVE-2015-1798, you should upgrade to NTP version 4.2.8p2 or later.
Which versions of NTP are affected by CVE-2015-1798?
NTP versions prior to 4.2.8p2, specifically 4.2.7p444 and earlier, are affected by CVE-2015-1798.
What type of attack does CVE-2015-1798 facilitate?
CVE-2015-1798 facilitates man-in-the-middle attacks by allowing attackers to spoof packets.
Is there a workaround for CVE-2015-1798 until I can apply a patch?
The best approach is to implement secure configurations and monitoring, but upgrading is ultimately recommended as a fix.