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I. Basic Information for CVE-2020-25578
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
In FreeBSD 12.2-STABLE before r368969, 11.4-STABLE before r369047, 12.2-RELEASE before p3, 12.1-RELEASE before p13 and 11.4-RELEASE before p7 several file systems were not properly initializing the d_off field of the dirent structures returned by VOP_READDIR. In particular, tmpfs(5), smbfs(5), autofs(5) and mqueuefs(5) were failing to do so. As a result, eight uninitialized kernel stack bytes may be leaked to userspace by these file systems.
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 FreeBSD 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD是Freebsd基金会的一套类Unix操作系统。 FreeBSD 存在信息泄露漏洞，该漏洞允许本地攻击者通过VOP READDIR读取内存片段，以获取敏感信息。
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 12.2-RELEASE before p3, 12.1-RELEASE before p13, 11.4-RELEASE before p7 -
II. Public POCs for CVE-2020-25578
#POC DescriptionSource LinkShenlong Link
1CVE-2020-25578 and CVE-2020-25579: Some FreeBSD info leak bugs I found in 2020.https://github.com/farazsth98/freebsd-dirent-info-leak-bugsPOC Details
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III. Intelligence Information for CVE-2020-25578
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New Vulnerabilities
Product: FreeBSD
Vendor: n/a
V. Comments for CVE-2020-25578

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