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CVE-2018-17159

Quick assessment

Affected
FreeBSD FreeBSD
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreeBSD是由Core Team团队负责的FreeBSD项目中的一套类Unix自由操作系统，是经过BSD、386BSD和4.4BSD发展而来的类Unix的一个重要分支。NFS server是其中的一个网络文件系统服务器。 FreeBSD 11.2-STABLE(r340854)之前版本和11.2-RELEASE-p5之前版本中的NFS服务器代码存在安全漏洞，该漏洞源于程序没有对READDIRPLUS NFS请求执行边界检测。远程攻击者可利用该漏洞造成资源耗尽。

AI Predicted 7.5 Difficulty: Easy EPSS 4.21% · P90
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I. Basic Information for CVE-2018-17159

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In FreeBSD before 11.2-STABLE(r340854) and 11.2-RELEASE-p5, the NFS server lacks a bounds check in the READDIRPLUS NFS request. Unprivileged remote users with access to the NFS server can cause a resource exhaustion by forcing the server to allocate an arbitrarily large memory allocation.
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
FreeBSD 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD是由Core Team团队负责的FreeBSD项目中的一套类Unix自由操作系统，是经过BSD、386BSD和4.4BSD发展而来的类Unix的一个重要分支。NFS server是其中的一个网络文件系统服务器。 FreeBSD 11.2-STABLE(r340854)之前版本和11.2-RELEASE-p5之前版本中的NFS服务器代码存在安全漏洞，该漏洞源于程序没有对READDIRPLUS NFS请求执行边界检测。远程攻击者可利用该漏洞造成资源耗尽。
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
FreeBSD FreeBSD FreeBSD 11.2 before 11.2-RELEASE-p5 -

II. Public POCs for CVE-2018-17159

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III. Intelligence Information for CVE-2018-17159

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Vendor Advisories for CVE-2018-17159 (2)

Other References for CVE-2018-17159 (1)

Same Patch Batch · FreeBSD · 2018-12-04 · 4 CVEs total

CVE-2018-17160 FreeBSD 输入验证错误漏洞
CVE-2018-17157 FreeBSD 安全漏洞
CVE-2018-17158 FreeBSD 安全漏洞

IV. Related Vulnerabilities

Same product: FreeBSD
Same vendor: FreeBSD

V. Comments for CVE-2018-17159

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