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CVE-2018-18955

Quick assessment

Affected
n/a n/a
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.15.x版本至4.19.2之前的4.19.x版本中的kernel/user_namespace.c文件的‘map_write()’函数存在安全漏洞。攻击者可利用该漏洞绕过对资源的访问控制。

AI Predicted 7.8 Difficulty: Moderate EPSS 7.61% · P94
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I. Basic Information for CVE-2018-18955

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel 4.15.x through 4.19.x before 4.19.2, map_write() in kernel/user_namespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAP_SYS_ADMIN in an affected user namespace can bypass access controls on resources outside the namespace, as demonstrated by reading /etc/shadow. This occurs because an ID transformation takes place properly for the namespaced-to-kernel direction but not for the kernel-to-namespaced direction.
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
Linux kernel 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.15.x版本至4.19.2之前的4.19.x版本中的kernel/user_namespace.c文件的‘map_write()’函数存在安全漏洞。攻击者可利用该漏洞绕过对资源的访问控制。
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-2018-18955

# POC Description Source Link Shenlong Link
1 💀 Linux local root exploit for CVE-2018-18955 https://github.com/scheatkode/CVE-2018-18955 POC Details
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III. Intelligence Information for CVE-2018-18955

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Patches & Fixes for CVE-2018-18955 (2)

Vendor Advisories for CVE-2018-18955 (6)

Exploits & Public PoCs for CVE-2018-18955 (2)

Other References for CVE-2018-18955 (3)

Same Patch Batch · n/a · 2018-11-16 · 28 CVEs total

CVE-2018-18761 SaltOS SQL注入漏洞
CVE-2018-19296 PHPMailer 安全漏洞
CVE-2018-18806 School Equipment Monitoring System SQL注入漏洞
CVE-2018-18805 Point Of Sales SQL注入漏洞
CVE-2018-18804 Bakeshop Inventory System SQL注入漏洞
CVE-2018-18803 Curriculum Evaluation System SQL注入漏洞
CVE-2018-18801 BSEN Ordering software SQL注入漏洞
CVE-2018-18799 School Attendance Monitoring System 跨站请求伪造漏洞
CVE-2018-18797 School Attendance Monitoring System 跨站请求伪造漏洞
CVE-2018-18796 Library Management System SQL注入漏洞
CVE-2018-18795 School Event Management System SQL注入漏洞
CVE-2018-18794 School Event Management System 跨站请求伪造漏洞
CVE-2018-18793 School Event Management System 安全漏洞
CVE-2018-18763 SaltOS SQL注入漏洞
CVE-2018-15769 Dell EMC RSA BSAFE Micro Edition Suite 加密问题漏洞
CVE-2018-18760 RhinOS 跨站请求伪造漏洞
CVE-2018-18759 Modbus Slave 缓冲区错误漏洞
CVE-2018-18756 Local Server 缓冲区错误漏洞
CVE-2018-18755 K-iwi Framework SQL注入漏洞
CVE-2018-16396 Ruby 安全特征问题漏洞

Showing top 20 of 28 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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

V. Comments for CVE-2018-18955

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