Alert GCSA-15047 - Vulnerabilita' in NTP

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

******************************************************************

Alert ID: GCSA-15047
Data: 27 Ottobre 2015
Titolo: Vulnerabilita' in NTP

******************************************************************

:: Descrizione del problema

Sono state riscontrate vulnerabilita' multiple in NTP che potrebbero 
essere sfruttate da un aggressore remoto per visualizzare file, 
oltrepassare restrizioni di autenticazione, modificare l'ora 
e provocare una condizione di denial of service sul sistema target.

Attualmente sembra non sia stato ancora pubblicato alcun exploit.

Per una descrizione completa delle vulnerabilita' si rimanda alla sezione "Riferimenti".


:: Software interessato

Versioni di NTP precedenti alla 4.2.8p4


:: Impatto

Denial of service via network
Rivelazione e modifica di informazioni utente e di sistema


:: Soluzioni

Aggiornare NTP alla versione 4.2.8p4

http://www.ntp.org/downloads.html


:: Riferimenti

NTP.org
http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_Security_Vulner

SecurityTracker
http://www.securitytracker.com/id/1033951

NetworkTimeFoundation
http://nwtime.org/ntf-releases-ntp-security-patches-ntp-4-2-8p4/

Mitre's CVE ID
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7691
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7692
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7701
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7702
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7703
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7704
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7705
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7848
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7849
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7850
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7851
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7852
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7853
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7854
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7855
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7871


GARR CERT Newsletter subscribe/unsubscribe:
http://www.cert.garr.it/alert/ricevi-gli-alert-di-cert
-----BEGIN PGP SIGNATURE-----

iD8DBQFWL4EZwZxMk2USYEIRAmGJAJ93KFTqR3PARWbruMocmam4swY2BACeOEpL
qGf0ntP4as2hzHQcY5wDyus=
=jLe+
-----END PGP SIGNATURE-----