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CVE-2018-14678

Quick assessment

Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Xen是英国剑桥大学开发的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。Linux kernel是其中的一个Linux系统所使用的内核。 Xen 4.11.x及之前版本中使用的Linux kernel 4.17.11及之前版本存在安全漏洞，该漏洞源于程序在没有首先调用error_entry的情况下就调用error_exit。本地攻击者可利用该漏洞造成拒绝服务（使用未初始化内存和系统崩溃）或获取权限。

AI Predicted 6.8 Difficulty: Easy EPSS 0.41% · P35

Possible ATT&CK Techniques 1 AI

T1069 · Permission Groups Discovery
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I. Basic Information for CVE-2018-14678

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Xen Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xen是英国剑桥大学开发的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。Linux kernel是其中的一个Linux系统所使用的内核。 Xen 4.11.x及之前版本中使用的Linux kernel 4.17.11及之前版本存在安全漏洞，该漏洞源于程序在没有首先调用error_entry的情况下就调用error_exit。本地攻击者可利用该漏洞造成拒绝服务（使用未初始化内存和系统崩溃）或获取权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2018-14678

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III. Intelligence Information for CVE-2018-14678

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Vendor Advisories for CVE-2018-14678 (5)

Mailing List Discussions for CVE-2018-14678 (1)

Other References for CVE-2018-14678 (1)

Same Patch Batch · n/a · 2018-07-28 · 9 CVEs total

CVE-2018-14679 Libmspack mspack/chmd.c 安全漏洞
CVE-2018-14680 Libmspack 输入验证错误漏洞
CVE-2018-14681 Libmspack 缓冲区错误漏洞
CVE-2018-14682 Libmspack mspack/chmd.c 安全漏洞
CVE-2018-14685 Gxlcms 安全漏洞
CVE-2018-14686 XYCMS 跨站脚本漏洞
CVE-2018-0497 ARM mbed TLS 安全漏洞
CVE-2018-0498 ARM mbed TLS 安全漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2018-14678

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