CVE-2015-1799

The CVE-2015-1799 issue affects ntpd's handling of symmetric-key authenticated peering. The vulnerability arises because ntpd may update internal state variables (state-variable updates) when processing certain invalid packets, which could allow a remote attacker—likely on the same or neighboring...

ntpd restrictions bypass

message authentication code implementation is invalid and can be bypasses...

CVE-2015-1798: Undefined Security Weakness

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...

UBUNTU-CVE-2015-1799

The symmetric-key feature in the receive function in ntpproto.c in ntpd in NTP 3.x and 4.x before 4.2.8p2 performs state-variable updates upon receiving certain invalid packets, which makes it easier for man-in-the-middle attackers to cause a denial of service synchronization loss by spoofing the...

CVE-2015-1799: Undefined Security Weakness

The symmetric-key feature in the receive function in ntpproto.c in ntpd in NTP 3.x and 4.x before 4.2.8p2 performs state-variable updates upon receiving certain invalid packets, which makes it easier for man-in-the-middle attackers to cause a denial of service synchronization loss by spoofing the...

Vulnerabilities Identified in Network Time Protocol Daemon (ntpd)

The Network Time Foundation's NTP Project has released an update addressing multiple vulnerabilities in ntpd. Exploitation of these vulnerabilities may allow an attacker to conduct a man-in-the-middle attack or cause a denial of service condition. Users and administrators are encouraged to review...

NTP Project ntpd reference implementation contains multiple vulnerabilities

Overview NTP Project ntpd reference implementation accepts unauthenticated packets with symmetric key cryptography and does not protect symmetric associations against denial of service attacks. Description CVE-2015-1798, bug 2779:In NTP4 installations utilizing symmetric key authentication,...

Cisco IOS XR NCS 6000 Multiple ntpd Vulnerabilities

The remote Cisco device is running a version of IOS XR software that is affected by the following vulnerabilities : - Errors exist related to weak cryptographic pseudorandom number generation PRNG, the functions 'ntprandom' and and 'configauth', and the 'ntp-keygen' utility. A man-in-the-middle...

Cisco IOS XR Multiple ntpd Vulnerabilities

The remote Cisco device is running a version of IOS XR software that is affected by the following vulnerabilities : - Errors exist related to weak cryptographic pseudorandom number generation PRNG, the functions 'ntprandom' and and 'configauth', and the 'ntp-keygen' utility. A man-in-the-middle...

Security Advisory - NTPd Security Vulnerability in Multiple Huawei Products

Huawei was notified about information released by NTP.org and CERT/CC regarding stack buffer overflow security vulnerabilities CVE-2014-9295 in NTP daemon ntpd on December 19th, 2014. Multiple stack-based buffer overflows in ntpd in NTP before 4.2.8 allow remote attackers to execute arbitrary cod...

[SECURITY] Fedora 21 Update: ntp-4.2.6p5-27.fc21

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...

[SECURITY] Fedora 20 Update: ntp-4.2.6p5-20.fc20

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...

OracleVM 2.2 : ntp (OVMSA-2015-0002)

The remote OracleVM system is missing necessary patches to address critical security updates : - don't generate weak control key for resolver CVE-2014-9293 - don't generate weak MD5 keys in ntp-keygen CVE-2014-9294 - fix buffer overflows via specially-crafted packets CVE-2014-9295 - increase...

Excavations and the use of ntpd vulnerability-vulnerability warning-the black bar safety net

0x01 description A few months ago, I decided to start doing fuzzing it. I chose the Network Time Protocol the Network Time Protocol, NTP is the reference implementation of ntpd as my first target, because I have NTP some of the background knowledge, while this Protocol seems very simple, can be...

Finding and exploiting ntpd vulnerabilities

Posted by Stephen Röttger, Time Lord Foreword by Chris Evans: this post by Stephen represents the first Project Zero guest blog post. From time to time, we’ll be featuring guest blog posts for top-tier security research. In this instance, we’ve been impressed by the remotely exploitable nature of...

Cisco Security Advisory: Multiple Vulnerabilities in ntpd Affecting Cisco Products

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Multiple Vulnerabilities in ntpd Affecting Cisco Products Advisory ID: cisco-sa-20141222-ntpd Revision 1.1 Last Updated 2014 December 23 13:37 UTC GMT For Public Release 2014 December 22 16:00 UTC GMT...

[SECURITY] Fedora 21 Update: ntp-4.2.6p5-25.fc21

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...

APPLE-SA-2014-12-22-1 OS X NTP Security Update

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 APPLE-SA-2014-12-22-1 OS X NTP Security Update OS X NTP Security Update is now available and addresses the following: ntpd Available for: OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, OS X Yosemite v10.10.1 Impact: A remote attacker may be able ...

Multiple Vulnerabilities in ntpd Affecting Cisco Products

Multiple Cisco products incorporate a version of the ntpd package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to execute arbitrary code or create a denial of service DoS condition. On December 19, 2014, NTP.org and...

[SECURITY] Fedora 20 Update: ntp-4.2.6p5-19.fc20

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...