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CVE-2023-5369— copy_file_range insufficient capability rights check

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.

FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD存在安全漏洞，该漏洞源于copy_file_range存在权限检查不当问题。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2023-5369

Vulnerability Information
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Vulnerability Title
copy_file_range insufficient capability rights check
Source: CVE Program / CVE List V5
Vulnerability Description
Before correction, the copy_file_range system call checked only for the CAP_READ and CAP_WRITE capabilities on the input and output file descriptors, respectively. Using an offset is logically equivalent to seeking, and the system call must additionally require the CAP_SEEK capability. This incorrect privilege check enabled sandboxed processes with only read or write but no seek capability on a file descriptor to read data from or write data to an arbitrary location within the file corresponding to that file descriptor.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对于放弃特权的检查不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
FreeBSD 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD存在安全漏洞，该漏洞源于copy_file_range存在权限检查不当问题。
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 13.2-RELEASE ~ p4 -

II. Public POCs for CVE-2023-5369

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III. Intelligence Information for CVE-2023-5369

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Vendor Advisories for CVE-2023-5369 (1)

Other References for CVE-2023-5369 (1)

Same Patch Batch · FreeBSD · 2023-10-04 · 3 CVEs total

CVE-2023-5370 arm64 boot CPUs may lack speculative execution protections
CVE-2023-5368 msdosfs data disclosure

IV. Related Vulnerabilities

Same product: FreeBSD
Same vendor: FreeBSD
Same weakness: CWE-273

V. Comments for CVE-2023-5369

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