https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 03 Oct 2026 10:25:44 +0000 https://vulnerability.circl.lu/vuln/fkie_cve-2026-62943 <p>btrbk is a tool for creating snapshots and remote backups of Btrfs subvolumes. From 0.29.0 until 0.32.7, btrbk&#39;s ssh_filter_btrbk.sh constructs allow_stream_match with a start anchor but without an end-of-string anchor for the complete command. A user restricted through an authorized_keys forced command can append a trailing pipe command after a valid btrbk command prefix, bypassing the allowlist and executing arbitrary commands with the privileges of the backup-target SSH account. Deployments that do not use ssh_filter_btrbk.sh in authorized_keys are not affected. This issue is fixed in version 0.32.7.</p> <p>btrbk is a tool for creating snapshots and remote backups of Btrfs subvolumes. From 0.29.0 until 0.32.7, btrbk&#39;s ssh_filter_btrbk.sh constructs allow_stream_match with a start anchor but without an end-of-string anchor for the complete command. A user restricted through an authorized_keys forced command can append a trailing pipe command after a valid btrbk command prefix, bypassing the allowlist and executing arbitrary commands with the privileges of the backup-target SSH account. Deployments that do not use ssh_filter_btrbk.sh in authorized_keys are not affected. This issue is fixed in version 0.32.7.</p> https://vulnerability.circl.lu/vuln/fkie_cve-2026-62943 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-62943 <p><strong>Affected:</strong> Ubuntu:16.04:LTS: btrbk, Ubuntu:18.04:LTS: btrbk, Ubuntu:20.04:LTS: btrbk, Ubuntu:22.04:LTS: btrbk, Ubuntu:24.04:LTS: btrbk, Ubuntu:26.04:LTS: btrbk</p> <p>btrbk is a tool for creating snapshots and remote backups of Btrfs subvolumes. From 0.29.0 until 0.32.7, btrbk&#39;s ssh_filter_btrbk.sh constructs allow_stream_match with a start anchor but without an end-of-string anchor for the complete command. A user restricted through an authorized_keys forced command can append a trailing pipe command after a valid btrbk command prefix, bypassing the allowlist and executing arbitrary commands with the privileges of the backup-target SSH account. Deployments that do not use ssh_filter_btrbk.sh in authorized_keys are not affected. This issue is fixed in version 0.32.7.</p> <p><strong>Affected:</strong> Ubuntu:16.04:LTS: btrbk, Ubuntu:18.04:LTS: btrbk, Ubuntu:20.04:LTS: btrbk, Ubuntu:22.04:LTS: btrbk, Ubuntu:24.04:LTS: btrbk, Ubuntu:26.04:LTS: btrbk</p> <p>btrbk is a tool for creating snapshots and remote backups of Btrfs subvolumes. From 0.29.0 until 0.32.7, btrbk&#39;s ssh_filter_btrbk.sh constructs allow_stream_match with a start anchor but without an end-of-string anchor for the complete command. A user restricted through an authorized_keys forced command can append a trailing pipe command after a valid btrbk command prefix, bypassing the allowlist and executing arbitrary commands with the privileges of the backup-target SSH account. Deployments that do not use ssh_filter_btrbk.sh in authorized_keys are not affected. This issue is fixed in version 0.32.7.</p> https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-62943