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CVE-2023-2789— GNU cflow parser.c parse_variable_declaration denial of service

Quick assessment

Affected
GNU cflow
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.

GNU cflow是美国GNU社区的一款流程图生成器，它能够读取C语言源文件并生成外部引用的流程图。 GNU cflow 1.7版本存在安全漏洞，该漏洞源于parser.c 的函数 func_body/parse_variable_declaration存在问题，导致拒绝服务。

CVSS 3.5 · Low EPSS 1.23% · P66

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-2789

Vulnerability Information
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Vulnerability Title
GNU cflow parser.c parse_variable_declaration denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in GNU cflow 1.7. It has been rated as problematic. This issue affects the function func_body/parse_variable_declaration of the file parser.c. The manipulation leads to denial of service. The exploit has been disclosed to the public and may be used. The identifier VDB-229373 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当的资源关闭或释放
Source: CVE Program / CVE List V5
Vulnerability Title
GNU cflow 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU cflow是美国GNU社区的一款流程图生成器，它能够读取C语言源文件并生成外部引用的流程图。 GNU cflow 1.7版本存在安全漏洞，该漏洞源于parser.c 的函数 func_body/parse_variable_declaration存在问题，导致拒绝服务。
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
GNU cflow 1.7 -

II. Public POCs for CVE-2023-2789

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III. Intelligence Information for CVE-2023-2789

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Vendor Advisories for CVE-2023-2789 (1)

Other References for CVE-2023-2789 (2)

IV. Related Vulnerabilities

Same product: cflow
Same vendor: GNU
Same weakness: CWE-404

V. Comments for CVE-2023-2789

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