Astra Linux - уязвимость в ntp

In ntp 4.2.8p10, 4.2.8p11, 4.2.8p12, and 4.2.8p13, remote attackers can prevent a broadcast client from synchronizing its clock with a broadcast NTP server through soofed modes 3 and 5. The attacker must either be part of the same broadcast network or control a slave device in that broadcast...

EUVD-2020-4208

Malware in sbrugna...

K13540723: NTP vulnerability CVE-2018-7184

Security Advisory Description ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service disruption by sending a packet with a zero-origin timestamp causing the association to reset and setting the...

CVE-2020-11868

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp...

USN-3096-1 ntp vulnerabilities

Aanchal Malhotra discovered that NTP incorrectly handled authenticated broadcast mode. A remote attacker could use this issue to perform a replay attack. CVE-2015-7973 Matt Street discovered that NTP incorrectly verified peer associations of symmetric keys. A remote attacker could use this issue ...

ntp: ntpd switching to interleaved mode with spoofed packets

It was found that an ntpd client could be forced to change from basic client/server mode to the interleaved symmetric mode. A remote attacker could use a spoofed packet that, when processed by an ntpd client, would cause that client to reject all future legitimate server responses, effectively...

MGASA-2016-0039 Updated ntp packages fix security vulnerability

In ntpd before 4.2.8p6, when used with symmetric key encryption, the client would accept packets encrypted with keys for any configured server, allowing a server to impersonate other servers to clients, thus performing a man-in-the-middle attack. A server can be attacked by a client in a similar...

ntp: authentication doesn't protect symmetric associations against DoS attacks

A denial of service flaw was found in the way NTP hosts that were peering with each other authenticated themselves before updating their internal state variables. An attacker could send packets to one peer host, which could cascade to other peers, and stop the synchronization process among the...