| Title | Linux Kernel および Xen における認可・権限・アクセス制御に関する脆弱性 |
|---|---|
| Summary | Linux Kernel および Xen には、認可・権限・アクセス制御に関する脆弱性が存在します。 |
| Possible impacts | 情報を取得される、情報を改ざんされる、およびサービス運用妨害 (DoS) 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 | July 25, 2018, midnight |
| Registration Date | Oct. 29, 2018, 12:09 p.m. |
| Last Update | Oct. 29, 2018, 12:09 p.m. |
| CVSS3.0 : 重要 | |
| Score | 7.8 |
|---|---|
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CVSS2.0 : 危険 | |
| Score | 7.2 |
|---|---|
| Vector | AV:L/AC:L/Au:N/C:C/I:C/A:C |
| Xen プロジェクト |
| Xen 4.11.x まで |
| Linux |
| Linux Kernel 4.17.11 まで |
| No | Changed Details | Date of change |
|---|---|---|
| 1 | [2018年10月29日] 掲載 |
Oct. 29, 2018, 12:09 p.m. |
| Summary | An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges. |
|---|---|
| Publication Date | July 29, 2018, 3:29 a.m. |
| Registration Date | March 1, 2021, 6:57 p.m. |
| Last Update | Nov. 21, 2024, 12:49 p.m. |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.14.21 | 4.14.61 | |||
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.15.5 | 4.17.13 | |||
| Configuration2 | or higher | or less | more than | less than | |
| cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* | 4.11.0 | ||||
| Configuration3 | or higher | or less | more than | less than | |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |||||
| Configuration4 | or higher | or less | more than | less than | |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | |||||
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* | |||||
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* | |||||