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CVE-2018-6918

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。 FreeBSD中存在安全漏洞，该漏洞源于ipsec选项包头的length字段没有计算该选项包头的大小。远程攻击者可通过发送数据包利用该漏洞造成拒绝服务（无限循环和崩溃）。以下版本受到影响：FreeBSD 11.1-STABLE之前版本，11.1-RELEASE-p9之前版本，10.4-STABLE之前版本，10.4-RELEASE-p

AI Predicted 7.5 Difficulty: Easy EPSS 4.29% · P90
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I. Basic Information for CVE-2018-6918

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p9, 10.4-STABLE, 10.4-RELEASE-p8 and 10.3-RELEASE-p28, the length field of the ipsec option header does not count the size of the option header itself, causing an infinite loop when the length is zero. This issue can allow a remote attacker who is able to send an arbitrary packet to cause the machine to crash.
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。 FreeBSD中存在安全漏洞，该漏洞源于ipsec选项包头的length字段没有计算该选项包头的大小。远程攻击者可通过发送数据包利用该漏洞造成拒绝服务（无限循环和崩溃）。以下版本受到影响：FreeBSD 11.1-STABLE之前版本，11.1-RELEASE-p9之前版本，10.4-STABLE之前版本，10.4-RELEASE-p
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 All supported versions of FreeBSD. -

II. Public POCs for CVE-2018-6918

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III. Intelligence Information for CVE-2018-6918

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Vendor Advisories for CVE-2018-6918 (4)

Mailing List Discussions for CVE-2018-6918 (2)

Other References for CVE-2018-6918 (1)

Same Patch Batch · FreeBSD · 2018-04-04 · 3 CVEs total

CVE-2018-6917 FreeBSD 数字错误漏洞
CVE-2018-6919 FreeBSD 安全漏洞

IV. Related Vulnerabilities

Same product: FreeBSD
Same vendor: FreeBSD

V. Comments for CVE-2018-6918

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