| Title | Linux Kernel のネットサブシステムにおけるサービス運用妨害 (パニック) の脆弱性 |
|---|---|
| Summary | Linux Kernel のネットサブシステムは、IFF_TX_SKB_SHARING フラグの使用を適切に制限しないため、サービス運用妨害 (パニック) 状態となる脆弱性が存在します。 |
| Possible impacts | ローカルユーザにより、/proc/net/pktgen/pgctrl にアクセスするために CAP_NET_ADMIN 機能を利用し、その後 VLAN インターフェースのブリッジデバイスと共に pktgen パッケージを使用されることで、サービス運用妨害 (パニック) 状態にされる可能性があります。 |
| Solution | ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。 |
| Publication Date | May 17, 2012, midnight |
| Registration Date | May 18, 2012, 2:21 p.m. |
| Last Update | May 18, 2012, 2:21 p.m. |
| CVSS2.0 : 警告 | |
| Score | 4.9 |
|---|---|
| Vector | AV:L/AC:L/Au:N/C:N/I:N/A:C |
| Linux |
| Linux Kernel 3.1 未満 |
| No | Changed Details | Date of change |
|---|---|---|
| 0 | [2012年05月18日] 掲載 |
Feb. 17, 2018, 10:37 a.m. |
| Summary | The net subsystem in the Linux kernel before 3.1 does not properly restrict use of the IFF_TX_SKB_SHARING flag, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability to access /proc/net/pktgen/pgctrl, and then using the pktgen package in conjunction with a bridge device for a VLAN interface. |
|---|---|
| Publication Date | May 17, 2012, 8 p.m. |
| Registration Date | Jan. 28, 2021, 4:39 p.m. |
| Last Update | Nov. 21, 2024, 10:31 a.m. |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.1 | ||||
| Configuration2 | or higher | or less | more than | less than | |
| cpe:2.3:o:avaya:9608_firmware:*:*:*:*:*:*:*:* | 6.0 | 6.6.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:avaya:9608:-:*:*:*:*:*:*:* | ||||
| Configuration3 | or higher | or less | more than | less than | |
| cpe:2.3:o:avaya:9608g_firmware:*:*:*:*:*:*:*:* | 6.0 | 6.6.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:avaya:9608g:-:*:*:*:*:*:*:* | ||||
| Configuration4 | or higher | or less | more than | less than | |
| cpe:2.3:o:avaya:9611g_firmware:*:*:*:*:*:*:*:* | 6.0 | 6.6.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:avaya:9611g:-:*:*:*:*:*:*:* | ||||
| Configuration5 | or higher | or less | more than | less than | |
| cpe:2.3:o:avaya:9621g_firmware:*:*:*:*:*:*:*:* | 6.0 | 6.6.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:avaya:9621g:-:*:*:*:*:*:*:* | ||||
| Configuration6 | or higher | or less | more than | less than | |
| cpe:2.3:o:avaya:9641g_firmware:*:*:*:*:*:*:*:* | 6.0 | 6.6.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:avaya:9641g:-:*:*:*:*:*:*:* | ||||
| Configuration7 | or higher | or less | more than | less than | |
| cpe:2.3:o:avaya:9641gs_firmware:*:*:*:*:*:*:*:* | 6.0 | 6.6.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:avaya:9641gs:-:*:*:*:*:*:*:* | ||||