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CVE-2018-16871

Quick assessment

Affected
Red Hat kernel:
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.

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 3.x所有版本和4.x版本至4.20之前版本存在代码问题漏洞。攻击者利用该漏洞可以使用无效的NFS序列触发空指针取消引用，从而导致机器崩溃并拒绝访问NFS服务器。

AI Predicted 7.8 Difficulty: Easy EPSS 2.70% · P85

Possible ATT&CK Techniques 1 AI

T1025 · Data from Removable Media
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I. Basic Information for CVE-2018-16871

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the Linux kernel's NFS implementation, all versions 3.x and all versions 4.x up to 4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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 3.x所有版本和4.x版本至4.20之前版本存在代码问题漏洞。攻击者利用该漏洞可以使用无效的NFS序列触发空指针取消引用，从而导致机器崩溃并拒绝访问NFS服务器。
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
Red Hat kernel: all 3.x, all 4.x up to 4.20 -

II. Public POCs for CVE-2018-16871

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III. Intelligence Information for CVE-2018-16871

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Vendor Advisories for CVE-2018-16871 (7)

Same Patch Batch · Red Hat · 2019-07-30 · 4 CVEs total

CVE-2019-10165 Red Hat OpenShift Container Platform 日志信息泄露漏洞
CVE-2019-10156 Ansible 信息泄露漏洞
CVE-2019-10138 python-novajoin 访问控制错误漏洞

IV. Related Vulnerabilities

Same product: kernel:
Same vendor: Red Hat
Same weakness: CWE-476

V. Comments for CVE-2018-16871

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