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CVE-2023-0751— GELI silently omits the keyfile if read from stdin

Quick assessment

Affected
FreeBSD FreeBSD
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.

GELI是freeBSD基金会的一个块设备层磁盘加密实用程序。 GELI存在安全漏洞，该漏洞源于从标准输入读取密钥文件时，它不会重复使用密钥文件来同时初始化多个提供者，导致第二个和后续设备默认使用NULL密钥作为用户密钥文件，如果用户仅使用没有用户密码的密钥文件，则主密钥会使用空密钥文件进行加密，从而可以轻松恢复主密钥。

AI Predicted 5.3 Difficulty: Easy EPSS 0.64% · P49

Possible ATT&CK Techniques 1 AI

T1552.005 · Cloud Instance Metadata API
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I. Basic Information for CVE-2023-0751

Vulnerability Information
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Vulnerability Title
GELI silently omits the keyfile if read from stdin
Source: CVE Program / CVE List V5
Vulnerability Description
When GELI reads a key file from standard input, it does not reuse the key file to initialize multiple providers at once resulting in the second and subsequent devices silently using a NULL key as the user key file. If a user only uses a key file without a user passphrase, the master key is encrypted with an empty key file allowing trivial recovery of the master key.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
GELI 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GELI是freeBSD基金会的一个块设备层磁盘加密实用程序。 GELI存在安全漏洞，该漏洞源于从标准输入读取密钥文件时，它不会重复使用密钥文件来同时初始化多个提供者，导致第二个和后续设备默认使用NULL密钥作为用户密钥文件，如果用户仅使用没有用户密码的密钥文件，则主密钥会使用空密钥文件进行加密，从而可以轻松恢复主密钥。
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 13.1-RELEASE ~ 13.1-RELEASE-p6 -

II. Public POCs for CVE-2023-0751

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III. Intelligence Information for CVE-2023-0751

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Other References for CVE-2023-0751 (1)

IV. Related Vulnerabilities

Same product: FreeBSD
Same vendor: FreeBSD
Same weakness: CWE-20

V. Comments for CVE-2023-0751

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