RHEL 7：grub2 (RHSA-2020: 3217)
high Nessus 插件 ID 139198
语言：
简介
远程 Red Hat 主机缺少一个或多个安全更新。描述
远程 Redhat Enterprise Linux 7 主机上安装的程序包受到 RHSA-2020: 3217 公告中提及的多个漏洞的影响。- grub2: 构建的 grub.cfg 文件可导致在引导启动过程中执行任意代码 (CVE-2020-10713)
- grub2: grub_malloc 未能验证分配大小，导致算术溢出和后续基于堆的缓冲区溢出 (CVE-2020-14308)
- grub2: grub_squash_read_symlink 中存在整数溢出，可能导致基于堆的缓冲区溢出 (CVE-2020-14309)
- grub2: read_section_as_string 中存在整数溢出，可能导致基于堆的缓冲区溢出 (CVE-2020-14310)
- grub2: grub_ext2_read_link 中存在整数溢出，可导致基于堆的缓冲区溢出 (CVE-2020-14311)
- grub2: 缺少 shim 协议时内核验证失败 (CVE-2020-15705)
- grub2: 在已执行相同函数的情况下重新定义函数时存在释放后使用 (CVE-2020-15706)
- grub2: initrd 大小处理中存在整数溢出 (CVE-2020-15707)
请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。
解决方案
更新受影响的程序包。另见
https://access.redhat.com/security/cve/CVE-2020-10713
https://access.redhat.com/security/cve/CVE-2020-14308
https://access.redhat.com/security/cve/CVE-2020-14309
https://access.redhat.com/security/cve/CVE-2020-14310
https://access.redhat.com/security/cve/CVE-2020-14311
https://access.redhat.com/security/cve/CVE-2020-15705
https://access.redhat.com/security/cve/CVE-2020-15706
https://access.redhat.com/security/cve/CVE-2020-15707
https://access.redhat.com/errata/RHSA-2020:3217
https://bugzilla.redhat.com/1825243
https://bugzilla.redhat.com/1852009
https://bugzilla.redhat.com/1852014
https://bugzilla.redhat.com/1852022
https://bugzilla.redhat.com/1852030
https://bugzilla.redhat.com/1860978
插件详情
严重性: High
ID: 139198
文件名: redhat-RHSA-2020-3217.nasl
版本: 1.15
类型: local
代理: unix
发布时间: 2020/7/30
最近更新时间: 2024/2/27
支持的传感器: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
风险信息
VPR
风险因素: High
分数: 7.4
CVSS v2
风险因素: Medium
基本分数: 4.6
时间分数: 3.6
矢量: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS 分数来源: CVE-2020-14309
CVSS v3
风险因素: High
基本分数: 8.2
时间分数: 7.4
矢量: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
时间矢量: CVSS:3.0/E:P/RL:O/RC:C
CVSS 分数来源: CVE-2020-10713
漏洞信息
CPE: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:fwupdate, p-cpe:/a:redhat:enterprise_linux:fwupdate-devel, p-cpe:/a:redhat:enterprise_linux:fwupdate-efi, p-cpe:/a:redhat:enterprise_linux:fwupdate-libs, p-cpe:/a:redhat:enterprise_linux:grub2, p-cpe:/a:redhat:enterprise_linux:grub2-common, p-cpe:/a:redhat:enterprise_linux:grub2-efi-aa64-modules, p-cpe:/a:redhat:enterprise_linux:grub2-efi-ia32, p-cpe:/a:redhat:enterprise_linux:grub2-efi-ia32-cdboot, p-cpe:/a:redhat:enterprise_linux:grub2-efi-ia32-modules, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64-cdboot, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64-modules, p-cpe:/a:redhat:enterprise_linux:grub2-pc, p-cpe:/a:redhat:enterprise_linux:grub2-pc-modules, p-cpe:/a:redhat:enterprise_linux:grub2-ppc-modules, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64-modules, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64le, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64le-modules, p-cpe:/a:redhat:enterprise_linux:grub2-tools, p-cpe:/a:redhat:enterprise_linux:grub2-tools-extra, p-cpe:/a:redhat:enterprise_linux:grub2-tools-minimal, p-cpe:/a:redhat:enterprise_linux:mokutil, p-cpe:/a:redhat:enterprise_linux:shim-ia32, p-cpe:/a:redhat:enterprise_linux:shim-unsigned-ia32, p-cpe:/a:redhat:enterprise_linux:shim-unsigned-x64, p-cpe:/a:redhat:enterprise_linux:shim-x64
必需的 KB 项: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
可利用: true
易利用性: Exploits are available
补丁发布日期: 2020/7/29
漏洞发布日期: 2020/7/29
参考资料信息
CVE: CVE-2020-10713, CVE-2020-14308, CVE-2020-14309, CVE-2020-14310, CVE-2020-14311, CVE-2020-15705, CVE-2020-15706, CVE-2020-15707