CVE编号
CVE-2017-17805利用情况
暂无补丁情况
官方补丁披露时间
2017-12-21漏洞描述
4.14.8之前的Linux内核中的Salsa20加密算法无法正确处理零长度输入，从而使本地攻击者能够使用基于AF_ALG的skcipher接口（CONFIG_CRYPTO_USER_API_SKCIPHER）导致拒绝服务（未初始化的内存和内核）崩溃）或通过执行使用blkcipher_walk API的精心设计的系统调用序列产生未指定的其他影响。 Salsa20的通用实现（crypto / salsa20_generic.c）和x86实现（arch / x86 / crypto / salsa20_glue.c）都容易受到攻击。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/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ecaaab5649781c5a0effdaf298a925063020500e
参考链接 |
|
|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=eca... | |
| http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html | |
| http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html | |
| http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html | |
| http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html | |
| http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html | |
| http://www.securityfocus.com/bid/102291 | |
| https://access.redhat.com/errata/RHSA-2018:2948 | |
| https://access.redhat.com/errata/RHSA-2018:3083 | |
| https://access.redhat.com/errata/RHSA-2018:3096 | |
| https://access.redhat.com/errata/RHSA-2019:2473 | |
| https://github.com/torvalds/linux/commit/ecaaab5649781c5a0effdaf298a925063020500e | |
| https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html | |
| https://usn.ubuntu.com/3617-1/ | |
| https://usn.ubuntu.com/3617-2/ | |
| https://usn.ubuntu.com/3617-3/ | |
| https://usn.ubuntu.com/3619-1/ | |
| https://usn.ubuntu.com/3619-2/ | |
| https://usn.ubuntu.com/3620-1/ | |
| https://usn.ubuntu.com/3620-2/ | |
| https://usn.ubuntu.com/3632-1/ | |
| https://www.debian.org/security/2017/dsa-4073 | |
| https://www.debian.org/security/2018/dsa-4082 | |
| https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8 |
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 | debian | debian_linux | 9.0 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * |
Up to (excluding) 4.14.8 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse | leap | 42.2 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_project | leap | 42.3 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_6 | kernel | * |
Up to (excluding) 0:2.6.32-754.18.2.el6 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_7 | bpftool | * |
Up to (excluding) 0:3.10.0-957.el7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_7 | kernel-rt | * |
Up to (excluding) 0:3.10.0-957.rt56.910.el7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | sles_12 | kernel-default-extra | * |
Up to (excluding) 4.12.14-94.41 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse | linux_enterprise_desktop | 12 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse | linux_enterprise_server | 11 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse | linux_enterprise_server | 12 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse | linux_enterprise_server_for_raspberry_pi | 12 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_14.04_lts | linux | * |
Up to (excluding) 3.13.0-144.193 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_16.04_lts | linux | * |
Up to (excluding) 4.4.0-119.143 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04_lts | linux | * |
Up to (excluding) 4.15.0-10.11 |
|||||
- 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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