Fedora 9: 2009:0547 Critical: NTP Certificate Validation Bypass

The Network Time Protocol (NTP) is used to synchronize a computer's

time with another reference time source. This package includes ntpd

(a daemon which continuously adjusts system time) and utilities used

to query and configure the ntpd daemon.

Perl scripts ntp-wait and ntptrace are in the ntp-perl package and

the ntpdate program is in the ntpdate package.

This update fixes CVE-2009-0021: NTP 4.2.4 before 4.2.4p5 and 4.2.5 before

4.2.5p150 does not properly check the return value from the OpenSSL

EVP_VerifyFinal function, which allows remote attackers to bypass validation of

the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys,

a similar vulnerability to CVE-2008-5077.

* Mon Jan 12 2009 Miroslav Lichvar 4.2.4p6-1.fc9

- update to 4.2.4p6 (CVE-2009-0021)

* Wed Oct 8 2008 Miroslav Lichvar 4.2.4p5-2.fc9

- don't write drift file upon exit

- run ntpq with full path in ntp-wait script

* Fri Aug 29 2008 Miroslav Lichvar 4.2.4p5-1

- update to 4.2.4p5

- add support for fast interface updates

* Mon Jul 28 2008 Miroslav Lichvar 4.2.4p4-7

- reload resolv.conf after temporary failure in name resolution (#456743)

- use clock_gettime

- make subpackages for perl scripts and ntpdate (#452097, #456116)

[ 1 ] Bug #476807 - CVE-2009-0021 ntp incorrectly checks for malformed signatures

https://bugzilla.redhat.com/show_bug.cgi?id=476807

su -c 'yum update ntp' at the command line.

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