Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2014.2476
ntp security update
22 December 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: ntp
Publisher: Debian
Operating System: Debian GNU/Linux 7
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-9296 CVE-2014-9295 CVE-2014-9294
CVE-2014-9293
Reference: ESB-2014.2473
ESB-2014.2472
Original Bulletin:
http://www.debian.org/security/2014/dsa-3108
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Debian Security Advisory DSA-3108-1 security@debian.org
http://www.debian.org/security/ Florian Weimer
December 20, 2014 http://www.debian.org/security/faq
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Package : ntp
CVE ID : CVE-2014-9293 CVE-2014-9294 CVE-2014-9295 CVE-2014-9296
Debian Bug : 773576
Several vulnerabilities were discovered in the ntp package, an
implementation of the Network Time Protocol.
CVE-2014-9293
ntpd generated a weak key for its internal use, with full
administrative privileges. Attackers could use this key to
reconfigure ntpd (or to exploit other vulnerabilities).
CVE-2014-9294
The ntp-keygen utility generated weak MD5 keys with insufficient
entropy.
CVE-2014-9295
ntpd had several buffer overflows (both on the stack and in the
data section), allowing remote authenticated attackers to crash
ntpd or potentially execute arbitrary code.
CVE-2014-9296
The general packet processing function in ntpd did not handle an
error case correctly.
The default ntpd configuration in Debian restricts access to localhost
(and possible the adjacent network in case of IPv6).
Keys explicitly generated by "ntp-keygen -M" should be regenerated.
For the stable distribution (wheezy), these problems have been fixed in
version 1:4.2.6.p5+dfsg-2+deb7u1.
We recommend that you upgrade your ntp packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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