The read_from_cmd_socket function in cmdmon.c in chronyd in Chrony before 1.23.1, and 1.24-pre1, allows remote attackers to cause a denial of service (CPU and bandwidth consumption) by sending a spoofed cmdmon packet that triggers a continuous exchange of NOHOSTACCESS messages between two daemons, a related issue to CVE-2009-3563.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Chrony | Tuxfamily | * | 1.23-pre1 (including) |
| Chrony | Tuxfamily | 1.18 (including) | 1.18 (including) |
| Chrony | Tuxfamily | 1.19 (including) | 1.19 (including) |
| Chrony | Tuxfamily | 1.19-1 (including) | 1.19-1 (including) |
| Chrony | Tuxfamily | 1.19.99.1 (including) | 1.19.99.1 (including) |
| Chrony | Tuxfamily | 1.19.99.2 (including) | 1.19.99.2 (including) |
| Chrony | Tuxfamily | 1.19.99.3 (including) | 1.19.99.3 (including) |
| Chrony | Tuxfamily | 1.20 (including) | 1.20 (including) |
| Chrony | Tuxfamily | 1.21 (including) | 1.21 (including) |
| Chrony | Tuxfamily | 1.21-pre1 (including) | 1.21-pre1 (including) |
| Chrony | Tuxfamily | 1.24-pre1 (including) | 1.24-pre1 (including) |