CVE-2019-14835— Linux kernel 缓冲区错误漏洞

一分钟漏洞结论

复制摘要 复制引用

影响对象

Linux Kernel Linux kernel

利用判断

尚无明确在野利用证据，仍需结合暴露面评估

建议动作

优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 2.6.34版本至5.2.x版本（5.3版本已修复）中的vhost功能记录缓冲区描述符的方法存在缓冲区错误漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。

CVE-2019-14835 影响 Linux Kernel Linux kernel。尚无明确在野利用证据，仍需结合暴露面评估。Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 2.6.34版本至5.2.x版本（5.3版本已修复）中的vhost功能记录缓冲区描述符的方法存在缓冲区错误漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓 CVE-2019-14835 漏洞详情，神龙漏洞库，https://cve.imfht.com/detail/CVE-2019-14835

一、 漏洞 CVE-2019-14835 基础信息

受影响产品

二、漏洞 CVE-2019-14835 的公开POC

三、漏洞 CVE-2019-14835 的情报信息

CVE-2019-14835 厂商安全公告 (23)

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14835 x_refsource_CONFIRM
• https://security.netapp.com/advisory/ntap-20191031-0005/ x_refsource_CONFIRM
• https://www.debian.org/security/2019/dsa-4531 vendor-advisory x_refsource_DEBIAN
• 🔗 USN-4135-2: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu 查看完整文章 vendor-advisory x_refsource_UBUNTU
• https://usn.ubuntu.com/4135-1/ vendor-advisory x_refsource_UBUNTU
• https://access.redhat.com/errata/RHSA-2019:2867 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2924 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHBA-2019:2824 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2901 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2829 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2863 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2865 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2889 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2862 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2854 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2900 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2830 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2899 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2827 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2869 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2864 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2828 vendor-advisory x_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2019:2866 vendor-advisory x_refsource_REDHAT

CVE-2019-14835 公开利用代码 (2)

• http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html x_refsource_MISC
• http://packetstormsecurity.com/files/154572/Kernel-Live-Patch-Security-Notice-LSN-0056-1.html x_refsource_MISC

CVE-2019-14835 邮件列表归档 (13)

• https://www.openwall.com/lists/oss-security/2019/09/17/1 x_refsource_MISC
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html vendor-advisory x_refsource_SUSE
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html vendor-advisory x_refsource_SUSE
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YW3QNMPENPFEGVTOFPSNOBL7JEIJS25P/ vendor-advisory x_refsource_FEDORA
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQFY6JYFIQ2VFQ7QCSXPWTUL5ZDNCJL5/ vendor-advisory x_refsource_FEDORA
• 🔗 Bugtraq: [SECURITY] [DSA 4531-1] linux security update 查看完整文章 mailing-list x_refsource_BUGTRAQ
• https://seclists.org/bugtraq/2019/Nov/11 mailing-list x_refsource_BUGTRAQ
• https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html mailing-list x_refsource_MLIST
• https://lists.debian.org/debian-lts-announce/2019/10/msg00000.html mailing-list x_refsource_MLIST
• http://www.openwall.com/lists/oss-security/2019/10/03/1 mailing-list x_refsource_MLIST
• http://www.openwall.com/lists/oss-security/2019/10/09/7 mailing-list x_refsource_MLIST
• http://www.openwall.com/lists/oss-security/2019/09/24/1 mailing-list x_refsource_MLIST
• http://www.openwall.com/lists/oss-security/2019/10/09/3 mailing-list x_refsource_MLIST

CVE-2019-14835 其他参考 (1)

• http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-qemu-en x_refsource_CONFIRM

• https://www.cve.org/CVERecord?id=CVE-2019-14835

IV. Related Vulnerabilities

V. Comments for CVE-2019-14835