CVE编号
CVE-2018-20856利用情况
暂无补丁情况
官方补丁披露时间
2019-07-26漏洞描述
在4.18.7之前的Linux内核中发现了一个问题。在块/ blk-core.c中，有一个__blk_drain_queue()UAF漏洞，因为某个错误情况被错误处理。解决建议
目前厂商已发布升级补丁以修复漏洞，补丁获取链接：https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24
参考链接 |
|
|---|---|
| http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slack... | |
| http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice... | |
| http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice... | |
| https://access.redhat.com/errata/RHSA-2019:3055 | |
| https://access.redhat.com/errata/RHSA-2019:3076 | |
| https://access.redhat.com/errata/RHSA-2019:3089 | |
| https://access.redhat.com/errata/RHSA-2019:3217 | |
| https://access.redhat.com/errata/RHSA-2020:0100 | |
| https://access.redhat.com/errata/RHSA-2020:0103 | |
| https://access.redhat.com/errata/RHSA-2020:0543 | |
| https://access.redhat.com/errata/RHSA-2020:0664 | |
| https://access.redhat.com/errata/RHSA-2020:0698 | |
| https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7 | |
| https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54... | |
| https://github.com/torvalds/linux/commit/54648cf1ec2d7f4b6a71767799c45676a138ca24 | |
| https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html | |
| https://seclists.org/bugtraq/2019/Aug/18 | |
| https://seclists.org/bugtraq/2019/Aug/26 | |
| https://security.netapp.com/advisory/ntap-20190905-0002/ | |
| https://support.f5.com/csp/article/K14673240?utm_source=f5support&utm_medium=RSS | |
| https://usn.ubuntu.com/4094-1/ | |
| https://usn.ubuntu.com/4116-1/ | |
| https://usn.ubuntu.com/4118-1/ | |
| https://www.debian.org/security/2019/dsa-4497 |
受影响软件情况
| # | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
| 1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 运行在以下环境 | |||||||||
| 系统 | amazon linux_AMI | linux | * |
Up to (excluding) 4.14.72-68.55.amzn1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_AMI | linux | * |
Up to (excluding) 4.14.72-68.55.amzn1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | centos_7 | linux | * |
Up to (excluding) 3.10.0-1062.4.1.el7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_8 | linux | * |
Up to (excluding) 4.9.144-3.1~deb8u1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | linux | * |
Up to (excluding) 4.9.168-1+deb9u5 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * |
Up to (excluding) 4.18.7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle linux_6 | linux | * |
Up to (excluding) 4.1.12-124.43.4.el6uek |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle linux_7 | linux | * |
Up to (excluding) 4.1.12-124.43.4.el7uek |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_6 | linux | * |
Up to (excluding) 4.1.12-124.43.4.el7uek |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_7 | linux | * |
Up to (excluding) 4.1.12-124.43.4.el7uek |
|||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_7 | bpftool | * |
Up to (excluding) 0:3.10.0-1062.4.1.el7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_7 | kernel-rt | * |
Up to (excluding) 0:3.10.0-1062.4.1.rt56.1027.el7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_7 | kpatch-patch-3_10_0-1062_1_1 | * |
Up to (excluding) 0:1-4.el7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | sles_12 | kernel-default | * |
Up to (excluding) 4.4.180-94.103 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_14.04_lts | linux | * |
Up to (excluding) 3.11.0-12.19 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_16.04 | linux | * |
Up to (excluding) 4.4.0-1056.63 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_16.04_lts | linux | * |
Up to (excluding) 4.4.0-161.189 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | linux | * |
Up to (excluding) 4.15.0-1042.42 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04_lts | linux | * |
Up to (excluding) 4.15.0-58.64 |
|||||
- 攻击路径 本地
- 攻击复杂度 复杂
- 权限要求 普通权限
- 影响范围 有限影响
- EXP成熟度 未验证
- 补丁情况 官方补丁
- 数据保密性 无影响
- 数据完整性 无影响
- 服务器危害 无影响
- 全网数量 100
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