Affected: Alpaquita:23: rsync, Alpaquita:25: rsync, Alpaquita:stream: rsync

Rsync version 3.4.2 and prior contain an authorization bypass vulnerability in the rsync daemon's hostname-based access control list enforcement when configured with chroot. Attackers can bypass hostname-based deny rules by controlling the PTR record for their source IP address, allowing connections from hostnames that administrators intended to deny when reverse DNS resolution fails and defaults to UNKNOWN.

Rsync version 3.4.2 and prior contain an authorization bypass vulnerability in the rsync daemon's hostname-based access control list enforcement when configured with chroot. Attackers can bypass hostname-based deny rules by controlling the PTR record for their source IP address, allowing connections from hostnames that administrators intended to deny when reverse DNS resolution fails and defaults to UNKNOWN.

rsync-3.4.3-1.1 on GA media

Security update for rsync

Affected: Ubuntu:Pro:14.04:LTS: rsync, Ubuntu:Pro:16.04:LTS: rsync, Ubuntu:Pro:18.04:LTS: rsync, Ubuntu:Pro:20.04:LTS: rsync, Ubuntu:22.04:LTS: rsync, Ubuntu:24.04:LTS: rsync, Ubuntu:25.10: rsync, Ubuntu:26.04:LTS: rsync

Rsync version 3.4.2 and prior contain an authorization bypass vulnerability in the rsync daemon's hostname-based access control list enforcement when configured with chroot. Attackers can bypass hostname-based deny rules by controlling the PTR record for their source IP address, allowing connections from hostnames that administrators intended to deny when reverse DNS resolution fails and defaults to UNKNOWN.

Ein Angreifer kann mehrere Schwachstellen in Rsync ausnutzen, um seine Privilegien zu erhöhen, um Informationen offenzulegen, um Sicherheitsvorkehrungen zu umgehen, und um einen Denial of Service Angriff durchzuführen.