Package: proftpd-mod-crypto Version: 1.3.7a+dfsg-12 Severity: important Dear Maintainer,
Since upgrading to bullseye, proftpd's sftp server fails with some MAC algorithms. This works: sftp -o MACs=hmac-sha2-256 user@proftpd-server This fails: sftp -o MACs=umac...@openssh.com user@proftpd-server The failure manifests as an aborted connection after a few KB of data traffic. The debian CLI sftp client will display the message: Corrupted MAC on input. ssh_dispatch_run_fatal: Connection to x.x.x.x port 22: message authentication code incorrect This means that some clients can no longer constructively use the server with their standard options. -- System Information: Debian Release: 11.0 APT prefers stable-security APT policy: (500, 'stable-security'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 5.10.0-8-amd64 (SMP w/1 CPU thread) Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages proftpd-mod-crypto depends on: ii libc6 2.31-13 ii libpam0g 1.4.0-9 ii libsodium23 1.0.18-1 ii libssl1.1 1.1.1k-1+deb11u1 ii proftpd-core 1.3.7a+dfsg-12 ii zlib1g 1:1.2.11.dfsg-2 proftpd-mod-crypto recommends no packages. proftpd-mod-crypto suggests no packages. -- no debconf information
