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I. Basic Information for CVE-2020-7461
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
In FreeBSD 12.1-STABLE before r365010, 11.4-STABLE before r365011, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, dhclient(8) fails to handle certain malformed input related to handling of DHCP option 119 resulting a heap overflow. The heap overflow could in principle be exploited to achieve remote code execution. The affected process runs with reduced privileges in a Capsicum sandbox, limiting the immediate impact of an exploit.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
FreeBSD 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD是Freebsd基金会的一套类Unix操作系统。 FreeBSD 存在缓冲区错误漏洞，该漏洞允许攻击者通过Dhclient Option 119触发拒绝服务并代码执行。
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
VendorProductAffected VersionsCPESubscribe
-FreeBSD FreeBSD 12.1-RELEASE before p9, 11.4-RELEASE before p3, 11.3-RELEASE before p13 -
II. Public POCs for CVE-2020-7461
#POC DescriptionSource LinkShenlong Link
1PoC for DHCP vulnerability (NAME:WRECK) in FreeBSDhttps://github.com/knqyf263/CVE-2020-7461POC Details
2Reproducer PoC for FreeBSD dhclient heap-based buffer overflow vulnerability when parsing DHCP option 119 (CVE-2020-7461)https://github.com/0xkol/freebsd-dhclient-pocPOC Details
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III. Intelligence Information for CVE-2020-7461
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IV. Related Vulnerabilities
Same product: FreeBSD
Same vendor: n/a
V. Comments for CVE-2020-7461

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