正文

vhost-net: guest to host kernel escape during migration

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0422
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CVE编号

CVE-2019-14835

利用情况

暂无

补丁情况

官方补丁

披露时间

2019-09-18
漏洞描述
在2.6.34到5.2.x的版本中发现了缓冲区溢出缺陷，Linux内核的vhost功能将virtqueue缓冲区转换为IOVS，在迁移过程中记录了缓冲区描述符。 当迁移进行时，能够将无效长度的描述符传递给主机的特权用户可以使用这个缺陷来增加他们在主机上的特权。
解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。
参考链接
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
http://packetstormsecurity.com/files/154572/Kernel-Live-Patch-Security-Notice...
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice...
http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slack...
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-qemu-en
http://www.openwall.com/lists/oss-security/2019/09/24/1
http://www.openwall.com/lists/oss-security/2019/10/03/1
http://www.openwall.com/lists/oss-security/2019/10/09/3
http://www.openwall.com/lists/oss-security/2019/10/09/7
https://access.redhat.com/errata/RHBA-2019:2824
https://access.redhat.com/errata/RHSA-2019:2827
https://access.redhat.com/errata/RHSA-2019:2828
https://access.redhat.com/errata/RHSA-2019:2829
https://access.redhat.com/errata/RHSA-2019:2830
https://access.redhat.com/errata/RHSA-2019:2854
https://access.redhat.com/errata/RHSA-2019:2862
https://access.redhat.com/errata/RHSA-2019:2863
https://access.redhat.com/errata/RHSA-2019:2864
https://access.redhat.com/errata/RHSA-2019:2865
https://access.redhat.com/errata/RHSA-2019:2866
https://access.redhat.com/errata/RHSA-2019:2867
https://access.redhat.com/errata/RHSA-2019:2869
https://access.redhat.com/errata/RHSA-2019:2889
https://access.redhat.com/errata/RHSA-2019:2899
https://access.redhat.com/errata/RHSA-2019:2900
https://access.redhat.com/errata/RHSA-2019:2901
https://access.redhat.com/errata/RHSA-2019:2924
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14835
https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html
https://lists.debian.org/debian-lts-announce/2019/10/msg00000.html
https://lists.fedoraproject.org/archives/list/[email protected]...
https://lists.fedoraproject.org/archives/list/[email protected]...
https://seclists.org/bugtraq/2019/Nov/11
https://seclists.org/bugtraq/2019/Sep/41
https://security.netapp.com/advisory/ntap-20191031-0005/
https://usn.ubuntu.com/4135-1/
https://usn.ubuntu.com/4135-2/
https://www.debian.org/security/2019/dsa-4531
https://www.openwall.com/lists/oss-security/2019/09/17/1
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 canonical ubuntu_linux 12.04 -
运行在以下环境
系统 canonical ubuntu_linux 14.04 -
运行在以下环境
系统 linux linux_kernel * From
(including)
2.6.34 		Up to
(excluding)
5.3
运行在以下环境
系统 redhat enterprise_linux 6.0 -
运行在以下环境
系统 redhat enterprise_linux 7.0 -
运行在以下环境
系统 redhat enterprise_linux 8.0 -
运行在以下环境
系统 redhat_6 kernel * Up to
(excluding)
0:2.6.32-754.23.1.el6
运行在以下环境
系统 redhat_7 bpftool * Up to
(excluding)
0:3.10.0-1062.1.2.el7
运行在以下环境
系统 redhat_7 kernel-rt * Up to
(excluding)
0:3.10.0-1062.1.2.rt56.1025.el7
运行在以下环境
系统 redhat_7 kpatch-patch-3_10_0-1062_1_1 * Up to
(excluding)
0:1-1.el7
运行在以下环境
系统 sles_12 kernel-default * Up to
(excluding)
4.12.14-95.32
运行在以下环境
系统 ubuntu_14.04_lts linux * Up to
(excluding)
3.13.0-173.224
运行在以下环境
系统 ubuntu_16.04_lts linux * Up to
(excluding)
4.4.0-164.192
运行在以下环境
系统 ubuntu_18.04_lts linux * Up to
(excluding)
4.15.0-64.73
阿里云评分 2.6
  • 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
CWE-ID 漏洞类型 CWE-120 未进行输入大小检查的缓冲区拷贝（传统缓冲区溢出）