CVE-2026-70464rsync 2.0.0 < 3.5.0 Connection Slot Exhaustion DoS via Handshake Stall

Beschreibung

rsync daemon 2.0.0 before 3.5.0 contains a denial of service vulnerability that allows unauthenticated remote attackers to exhaust daemon connection slots by stalling the handshake process before or after module selection without triggering the I/O timeout. Attackers can open many simultaneous connections and trickle data at the minimum rate to avoid timeout, or stall entirely before module selection where no timeout applies, consuming all available connection slots and denying service to legitimate clients.

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

Referenzen und Patches

• GitHub Security Advisory (GHSA-hrwq-ccf7-rw5m) vendor-advisoryVendor Advisory
• rsync 3.5.0 Release Notes release-notesRelease Notes
• https://www.vulncheck.com/advisories/rsync-connection-slot-exhaustion-dos-via-handshake-stall third-party-advisoryThird Party Advisory