Slackware Security Announcement 2009-343-01: ntp


New ntp packages are available for Slackware 8.1, 9.0, 9.1, 10.0, 10.1, 10.2,

11.0, 12.0, 12.1, 12.2, 13.0, and -current to fix a security issue. If a

spoofed mode 7 packet is sent to a vulnerable NTP daemon it may cause CPU

and/or disk space exhaustion, resulting in a denial of service.


More details about this issue may be found in the Common

Vulnerabilities and Exposures (CVE) database:



Here are the details from the Slackware 13.0 ChangeLog:


patches/packages/ntp-4.2.4p8-i486-1_slack13.0.txz: Upgraded.

Prevent a denial-of-service attack involving spoofed mode 7 packets.

For more information, see:

(* Security fix *)




Where to find the new packages:



HINT: Getting slow download speeds from

Give a try. This is another primary FTP site

for Slackware that can be considerably faster than downloading

directly from


Thanks to the friendly folks at the OSU Open Source Lab

( for donating additional FTP and rsync hosting

to the Slackware project! šŸ™‚


Also see the “Get Slack” section on for

additional mirror sites near you.


Updated package for Slackware 8.1:


Updated package for Slackware 9.0:


Updated package for Slackware 9.1:


Updated package for Slackware 10.0:


Updated package for Slackware 10.1:


Updated package for Slackware 10.2:


Updated package for Slackware 11.0:


Updated package for Slackware 12.0:


Updated package for Slackware 12.1:


Updated package for Slackware 12.2:


Updated package for Slackware 13.0:


Updated package for Slackware x86_64 13.0:


Updated package for Slackware -current:


Updated package for Slackware x86_64 -current:



MD5 signatures:



Slackware 8.1 package:

cf159af385eff1f3e7ee97dd31181a50 ntp-4.2.2p3-i386-2_slack8.1.tgz


Slackware 9.0 package:

281891ce933cc51b4da7c4856c2e9a7a ntp-4.2.2p3-i386-2_slack9.0.tgz


Slackware 9.1 package:

8ba51d005758c1d42db139730e9552ab ntp-4.2.2p3-i486-2_slack9.1.tgz


Slackware 10.0 package:

d4494f109da2f947515bf8ca40db2e6b ntp-4.2.2p3-i486-2_slack10.0.tgz


Slackware 10.1 package:

3ed65c1bda71156978424de0f13436f9 ntp-4.2.2p3-i486-2_slack10.1.tgz


Slackware 10.2 package:

345eced7dc1135943f119c8ae066fbde ntp-4.2.2p3-i486-2_slack10.2.tgz


Slackware 11.0 package:

e5fbcad45bb274ebee2c6c11b0c18a73 ntp-4.2.2p3-i486-3_slack11.0.tgz


Slackware 12.0 package:

d367da8f356c71ee915957280fe731b2 ntp-4.2.4p8-i486-1_slack12.0.tgz


Slackware 12.1 package:

3632138b29c2f73f027be03b220da30c ntp-4.2.4p8-i486-1_slack12.1.tgz


Slackware 12.2 package:

450f8b3cdf63cc61ea6d2baa9c9ebb00 ntp-4.2.4p8-i486-1_slack12.2.tgz


Slackware 13.0 package:

af0c7662fb258ffd6f34f4ca68ee6553 ntp-4.2.4p8-i486-1_slack13.0.txz


Slackware x86_64 13.0 package:

77dfe4dfe7f35e02e9cd455b0d82e79f ntp-4.2.4p8-x86_64-1_slack13.0.txz


Slackware -current package:

22f81c7c0856aa55846323f9376dbdbf ntp-4.2.4p8-i486-1.txz


Slackware x86_64 -current package:

1d6562a98631f5f8601f696a7b4d7ed7 ntp-4.2.4p8-x86_64-1.txz



Installation instructions:



Upgrade the package as root:

# upgradepkg ntp-4.2.4p8-i486-1_slack13.0.txz


Then, restart ntpd.





Slackware Linux Security Team

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