Package: isc-dhcp-server Version: 4.2.2.dfsg.1-5 Severity: severe /var filled up at about 5:06:22
dhcp started logging errors and continued running for at least 5 more minutes At 05:11:40, all logging from dhcp stopped (although other syslog entries also stopped due to syslog being on the same full partition) At some point later, it was discovered that dhcpd was completely down (no process running) Checking logs on dhcp clients, they started complaining about 05:34:28 (e.g. NFS server inaccessible), so the dhcpd had crashed between 05:11 and 05:34 This would appear to make dhcpd vulnerable to just about any attack that can fill /var. Even a flood of DHCP requests could be used to bring it down (if DHCP requests are being logged, the flood of requests could fill the log, dhcpd fails....) - consequently, I've marked this bug as `severe'. Oct 26 05:00:14 dhcphost1 dhcpd: BOOTREQUEST from XX:XX:XX:XX:XX:XX via eth0: BOOTP from dynamic client and no dynamic leases Oct 26 05:00:15 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.114 from XX:XX:XX:XX:XX:XX (Polycom_XXXXXXXXXXXX) via eth0 Oct 26 05:00:15 dhcphost1 dhcpd: DHCPACK on 192.168.1.114 to XX:XX:XX:XX:XX:XX (Polycom_XXXXXXXXXXXX) via eth0 Oct 26 05:00:15 dhcphost1 dhcpd: Unable to add forward map from Polycom_XXXXXXXXXXXX.example.org to 192.168.1.114: REFUSED Oct 26 05:00:47 dhcphost1 dhcpd: BOOTREQUEST from XX:XX:XX:XX:XX:XX via eth0: BOOTP from dynamic client and no dynamic leases Oct 26 05:01:10 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.4 from XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:01:10 dhcphost1 dhcpd: DHCPACK on 192.168.1.4 to XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:01:10 dhcphost1 dhcpd: Added new forward map from host2.example.org to 192.168.1.4 Oct 26 05:01:10 dhcphost1 dhcpd: Added reverse map from 4.1.168.192.in-addr.arpa. to host2.example.org Oct 26 05:06:22 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:06:22 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.101 from XX:XX:XX:XX:XX:XX (Polycom_XXXXXXXXXXXX) via eth0: database update failed Oct 26 05:06:22 dhcphost1 dhcpd: Unable to add forward map from Polycom_XXXXXXXXXXXX.example.org to 192.168.1.101: REFUSED Oct 26 05:06:36 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.5 from XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:06:36 dhcphost1 dhcpd: DHCPACK on 192.168.1.5 to XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:06:54 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:06:54 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.107 (192.168.1.2) from XX:XX:XX:XX:XX:XX via eth0: database update failed Oct 26 05:07:17 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.3 from XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:07:17 dhcphost1 dhcpd: DHCPACK on 192.168.1.3 to XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:07:26 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:07:26 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:07:26 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.3 from XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:07:26 dhcphost1 dhcpd: DHCPACK on 192.168.1.3 to XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:07:34 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:07:34 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:07:43 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:07:43 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:07:52 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:07:52 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:07:52 dhcphost1 dhcpd: Added new forward map from host3.example.org to 192.168.1.3 Oct 26 05:07:52 dhcphost1 dhcpd: Added new forward map from host3.example.org to 192.168.1.3 Oct 26 05:07:52 dhcphost1 dhcpd: Added reverse map from 3.1.168.192.in-addr.arpa. to host3.example.org Oct 26 05:07:52 dhcphost1 dhcpd: Added reverse map from 3.1.168.192.in-addr.arpa. to host3.example.org Oct 26 05:08:01 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:08:01 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.125 from XX:XX:XX:XX:XX:XX (Polycom_XXXXXXXXXXXX) via eth0: database update failed Oct 26 05:08:09 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:08:09 dhcphost1 dhcpd: BOOTREQUEST from XX:XX:XX:XX:XX:XX via eth0: BOOTP from dynamic client and no dynamic leases Oct 26 05:08:09 dhcphost1 dhcpd: Unable to add forward map from Polycom_XXXXXXXXXXXX.example.org to 192.168.1.125: REFUSED Oct 26 05:08:18 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:08:18 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:08:18 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:08:18 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:08:24 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:08:24 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.101 from XX:XX:XX:XX:XX:XX (Polycom_XXXXXXXXXXXX) via eth0: database update failed Oct 26 05:08:24 dhcphost1 dhcpd: Unable to add forward map from Polycom_XXXXXXXXXXXX.example.org to 192.168.1.101: REFUSED Oct 26 05:08:33 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:08:33 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:08:33 dhcphost1 dhcpd: BOOTREQUEST from XX:XX:XX:XX:XX:XX via eth0: BOOTP from dynamic client and no dynamic leases Oct 26 05:08:50 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:08:50 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:08:59 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:08:59 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.102 from XX:XX:XX:XX:XX:XX (apchost) via eth0: database update failed Oct 26 05:09:07 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:09:07 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:09:07 dhcphost1 dhcpd: BOOTREQUEST from XX:XX:XX:XX:XX:XX via eth0: BOOTP from dynamic client and no dynamic leases Oct 26 05:09:16 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:09:16 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.101 from XX:XX:XX:XX:XX:XX (Polycom_XXXXXXXXXXXX) via eth0: database update failed Oct 26 05:09:16 dhcphost1 dhcpd: Unable to add forward map from Polycom_XXXXXXXXXXXX.example.org to 192.168.1.101: REFUSED Oct 26 05:09:25 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:09:25 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:09:34 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:09:34 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:09:42 dhcphost1 dhcpd: BOOTREQUEST from XX:XX:XX:XX:XX:XX via eth0: BOOTP from dynamic client and no dynamic leases Oct 26 05:09:42 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:09:42 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.119 from XX:XX:XX:XX:XX:XX via eth0: database update failed Oct 26 05:09:55 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:09:55 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:09:55 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:09:55 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.125 from XX:XX:XX:XX:XX:XX (Polycom_XXXXXXXXXXXX) via eth0: database update failed Oct 26 05:09:55 dhcphost1 dhcpd: Unable to add forward map from Polycom_XXXXXXXXXXXX.example.org to 192.168.1.125: REFUSED Oct 26 05:10:04 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:10:04 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:10:13 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:10:13 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:10:13 dhcphost1 dhcpd: BOOTREQUEST from XX:XX:XX:XX:XX:XX via eth0: BOOTP from dynamic client and no dynamic leases Oct 26 05:10:21 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:10:21 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.101 from XX:XX:XX:XX:XX:XX (Polycom_XXXXXXXXXXXX) via eth0: database update failed Oct 26 05:10:30 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:10:30 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.114 from XX:XX:XX:XX:XX:XX (Polycom_XXXXXXXXXXXX) via eth0: database update failed Oct 26 05:10:30 dhcphost1 dhcpd: Unable to add forward map from Polycom_XXXXXXXXXXXX.example.org to 192.168.1.101: REFUSED Oct 26 05:10:30 dhcphost1 dhcpd: Unable to add forward map from Polycom_XXXXXXXXXXXX.example.org to 192.168.1.114: REFUSED Oct 26 05:10:39 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:10:39 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:10:39 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.4 from XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:10:39 dhcphost1 dhcpd: DHCPACK on 192.168.1.4 to XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:10:39 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.4 from XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:10:39 dhcphost1 dhcpd: DHCPACK on 192.168.1.4 to XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:10:47 dhcphost1 dhcpd: Added new forward map from host2.example.org to 192.168.1.4 Oct 26 05:10:48 dhcphost1 dhcpd: Added new forward map from host2.example.org to 192.168.1.4 Oct 26 05:10:48 dhcphost1 dhcpd: BOOTREQUEST from XX:XX:XX:XX:XX:XX via eth0: BOOTP from dynamic client and no dynamic leases Oct 26 05:10:48 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:10:48 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.125 from XX:XX:XX:XX:XX:XX (Polycom_XXXXXXXXXXXX) via eth0: database update failed Oct 26 05:10:56 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:10:56 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:10:56 dhcphost1 dhcpd: Added reverse map from 4.1.168.192.in-addr.arpa. to host2.example.org Oct 26 05:10:56 dhcphost1 dhcpd: Added reverse map from 4.1.168.192.in-addr.arpa. to host2.example.org Oct 26 05:11:05 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:11:05 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.102 from XX:XX:XX:XX:XX:XX (apchost) via eth0: database update failed Oct 26 05:11:14 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:11:14 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:11:14 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.3 from XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:11:14 dhcphost1 dhcpd: DHCPACK on 192.168.1.3 to XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:11:14 dhcphost1 dhcpd: BOOTREQUEST from XX:XX:XX:XX:XX:XX via eth0: BOOTP from dynamic client and no dynamic leases Oct 26 05:11:23 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:11:23 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.101 from XX:XX:XX:XX:XX:XX (Polycom_XXXXXXXXXXXX) via eth0: database update failed Oct 26 05:11:31 dhcphost1 dhcpd: Unable to add forward map from Polycom_XXXXXXXXXXXX.example.org to 192.168.1.101: REFUSED Oct 26 05:11:31 dhcphost1 dhcpd: commit_leases: unable to commit: No space left on device Oct 26 05:11:31 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.126 from XX:XX:XX:XX:XX:XX (wheezy1) via eth0: database update failed Oct 26 05:11:31 dhcphost1 dhcpd: Added new forward map from host3.example.org to 192.168.1.3 Oct 26 05:11:40 dhcphost1 dhcpd: DHCPREQUEST for 192.168.1.5 from XX:XX:XX:XX:XX:XX via eth0 Oct 26 05:11:40 dhcphost1 dhcpd: DHCPACK on 192.168.1.5 to XX:XX:XX:XX:XX:XX via eth0 -- To UNSUBSCRIBE, 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