AIX 7.1 TL 2 : ntp (IV74262)

Network Time Protocol NTP Project NTP daemon ntpd is vulnerable to a denial of service, caused by an error when using symmetric key authentication. By sending specially-crafted packets to both peering hosts, an attacker could exploit this vulnerability to prevent synchronization. %NASLMINLEVEL...

AIX 7.1 TL 3 : ntp (IV74261)

The remote AIX host has a version of Network Time Protocol NTP installed that is affected by a denial of service vulnerability due to a flaw in the symmetric-key feature in the receive function in file ntpproto.c when receiving certain invalid packets, which causes state-variable updates to be...

ntp security, bug fix, and enhancement update

4.2.6p5-5 - reject packets without MAC when authentication is enabled CVE-2015-1798 - protect symmetric associations with symmetric key against DoS attack CVE-2015-1799 - fix generation of MD5 keys with ntp-keygen on big-endian systems CVE-2015-3405 - log when stepping clock for leap second or...

AIX 7.1 TL 0 : ntp4 (IV71096)

https://vulners.com/cve/CVE-2014-9297 Network Time Protocol NTP Project NTP daemon ntpd could allow a remote attacker to conduct spoofing attacks, caused by insufficient entropy in PRNG. An attacker could exploit this vulnerability to spoof the IPv6 address ::1 to bypass ACLs and launch further...

AIX 6.1 TL 6 : ntp4 (IV71094)

https://vulners.com/cve/CVE-2014-9297 Network Time Protocol NTP Project NTP daemon ntpd could allow a remote attacker to conduct spoofing attacks, caused by insufficient entropy in PRNG. An attacker could exploit this vulnerability to spoof the IPv6 address ::1 to bypass ACLs and launch further...

Vulnerabilities in NTPv4 affect AIX,Vulnerabilities in NTPv4 affect VIOS

IBM SECURITY ADVISORY First Issued: Mon Jun 29 10:00:16 CDT 2015 The most recent version of this document is available here: http://aix.software.ibm.com/aix/efixes/security/ntp4advisory.asc https://aix.software.ibm.com/aix/efixes/security/ntp4advisory.asc...

wss4j: Apache WSS4J is vulnerable to Bleichenbacher's attack (incomplete fix for CVE-2011-2487)

It was found that a prior countermeasure in Apache WSS4J for Bleichenbacher's attack on XML Encryption CVE-2011-2487 threw an exception that permitted an attacker to determine the failure of the attempted attack, thereby leaving WSS4J vulnerable to the attack. The original flaw allowed a remote...

Important: ntp

Issue Overview: The symmetric-key feature in the receive function in ntpproto.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. CVE-2015-1798 The...

SUSE-SU-2015:0865-1 Security update for ntp

ntp was updated to fix two security related flaws as well as 'slew' mode handling for leap seconds. The following vulnerabilities were fixe: ntpd could accept unauthenticated packets with symmetric key crypto. CVE-2015-1798 ntpd authentication did not protect symmetric associations against DoS...

wss4j: Apache WSS4J is vulnerable to Bleichenbacher's attack (incomplete fix for CVE-2011-2487)

It was found that a prior countermeasure in Apache WSS4J for Bleichenbacher's attack on XML Encryption CVE-2011-2487 threw an exception that permitted an attacker to determine the failure of the attempted attack, thereby leaving WSS4J vulnerable to the attack. The original flaw allowed a remote...

MGASA-2015-0152 Updated ntp packages fix security vulnerabilities

Updated ntp packages fix security vulnerabilities: The symmetric-key feature in the receive function in ntpproto.c in ntpd in NTP 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 th...

Updated ntp packages fix security vulnerabilities

Updated ntp packages fix security vulnerabilities: The symmetric-key feature in the receive function in ntpproto.c in ntpd in NTP 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 th...

Debian DSA-3223-1 : ntp - security update

Multiple vulnerabilities were discovered in ntp, an implementation of the Network Time Protocol : - CVE-2015-1798 When configured to use a symmetric key with an NTP peer, ntpd would accept packets without MAC as if they had a valid MAC. This could allow a remote attacker to bypass the packet...

Debian DLA-192-1 : ntp security update

Brief introduction CVE-2015-1798 When ntpd is configured to use a symmetric key to authenticate a remote NTP server/peer, it checks if the NTP message authentication code MAC in received packets is valid, but not if there actually is any MAC included. Packets without a MAC are accepted as if they...

Debian Security Advisory DSA 3223-1 (ntp - security update)

Multiple vulnerabilities were discovered in ntp, an implementation of the Network Time Protocol: CVE-2015-1798 When configured to use a symmetric key with an NTP peer, ntpd would accept packets without MAC as if they had a valid MAC. This could allow a remote attacker to bypass the packet...

DLA-192-1 ntp - security update

Bulletin has no description...

NTP ntpd Denial of Service Vulnerability

NTP Network Time Protocol is a protocol used by clients to synchronize the date and time with a time server. A denial of service vulnerability exists in NTP ntpd due to inconsistencies in packets received by NTP4 installations using symmetric key authentication. An attacker is allowed to exploit...

NTP MAC Spoofing Vulnerability

NTP Network Time Protocol is a protocol used by clients to synchronize the date and time with a time server. A MAC spoofing vulnerability exists in NTP. Due to NTP4 installation using symmetric key authentication when the unauthenticated code MAC is received. Allows an attacker to exploit the...

Network Time Protocol Daemon MAC Checking Failure Authentication Bypass Vulnerability

A vulnerability in the Network Time Protocol NTP daemon could allow an unauthenticated, adjacent attacker to bypass authentication mechanisms and access an affected system. The vulnerability is due to incorrect validation of the message authentication code MAC field. An attacker could exploit thi...

NTP Symmetric Key Authentication Security Vulnerabilities Patched

NTP, the much maligned protocol abused in a number of high volume DDoS attacks a year ago, is suffering from newly patched vulnerabilities that could allow an attacker to send unauthenticated packets to a client that would be executed. The Department of Homeland Security and CERT at the Software...