4 results · Feed
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Medium —
ntpd NTS client denial of service via wrongly sized cookies
Two denial of service vulnerabilities were found in ntpd-rs related to the handling of NTS cookies in our client functionality. Whenever an NTS source is configured and the server behind that source is sending zero-sized cookies or cookies larger than what wo…
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High 7.5
Unlimited number of NTS-KE connections can crash ntpd-rs server
nptd-rs is a tool for synchronizing your computer's clock, implementing the NTP and NTS protocols. There is a missing limit for accepted NTS-KE connections. This allows an unauthenticated remote attacker to crash ntpd-rs when an NTS-KE server is configured. N…
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Low 2.6
ntpd has Dependency on Vulnerable Third-Party Component
During startup, an attacker that can man-in-the-middle traffic to and from NTS key exchange servers can trigger a very expensive key validation process due to a vulnerability in webpki. ### Impact This vulnerability can lead to excessive cpu usage on startup …
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High 7.5
Improper handling of NTS cookie length that could crash the ntpd-rs server
ntpd-rs is an NTP implementation written in Rust. ntpd-rs does not validate the length of NTS cookies in received NTP packets to the server. An attacker can crash the server by sending a specially crafted NTP packet containing a cookie shorter than what the s…