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CVE-2023-5941— libc stdio buffer overflow

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 12.4-RELEASE版本至12.4-RELEASE-p7之前版本、13.2-RELEASE版本至13.2-RELEASE-p5之前版本存在安全漏洞。攻击者利用该漏洞可以执行任意代码。

AI Predicted 7.8 Difficulty: Moderate EPSS 1.07% · P64

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2023-5941

Vulnerability Information
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Vulnerability Title
libc stdio buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
In versions of FreeBSD 12.4-RELEASE prior to 12.4-RELEASE-p7 and FreeBSD 13.2-RELEASE prior to 13.2-RELEASE-p5 the __sflush() stdio function in libc does not correctly update FILE objects' write space members for write-buffered streams when the write(2) system call returns an error.  Depending on the nature of an application that calls libc's stdio functions and the presence of errors returned from the write(2) system call (or an overridden stdio write routine) a heap buffer overflow may occur. Such overflows may lead to data corruption or the execution of arbitrary code at the privilege level of the calling program.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
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 12.4-RELEASE版本至12.4-RELEASE-p7之前版本、13.2-RELEASE版本至13.2-RELEASE-p5之前版本存在安全漏洞。攻击者利用该漏洞可以执行任意代码。
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 12.4-RELEASE ~ p7 -

II. Public POCs for CVE-2023-5941

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III. Intelligence Information for CVE-2023-5941

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Vendor Advisories for CVE-2023-5941 (1)

Other References for CVE-2023-5941 (1)

IV. Related Vulnerabilities

Same product: FreeBSD
Same vendor: FreeBSD
Same weakness: CWE-787

V. Comments for CVE-2023-5941

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