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CVE-2024-32655— Npgsql Vulnerable to SQL Injection via Protocol Message Size Overflow

Quick assessment

Affected
npgsql npgsql
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Npgsql是Npgsql开源的一个 PostgreSQL 的开源 .NET 数据提供程序。 Npgsql存在安全漏洞，该漏洞源于存在溢出问题，攻击者可以利用此漏洞执行任意SQL语句。

CVSS 8.1 · High EPSS 1.72% · P77

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-32655

Vulnerability Information
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Vulnerability Title
Npgsql Vulnerable to SQL Injection via Protocol Message Size Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
Npgsql is the .NET data provider for PostgreSQL. The `WriteBind()` method in `src/Npgsql/Internal/NpgsqlConnector.FrontendMessages.cs` uses `int` variables to store the message length and the sum of parameter lengths. Both variables overflow when the sum of parameter lengths becomes too large. This causes Npgsql to write a message size that is too small when constructing a Postgres protocol message to send it over the network to the database. When parsing the message, the database will only read a small number of bytes and treat any following bytes as new messages while they belong to the old message. Attackers can abuse this to inject arbitrary Postgres protocol messages into the connection, leading to the execution of arbitrary SQL statements on the application's behalf. This vulnerability is fixed in 4.0.14, 4.1.13, 5.0.18, 6.0.11, 7.0.7, and 8.0.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
Npgsql 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Npgsql是Npgsql开源的一个 PostgreSQL 的开源 .NET 数据提供程序。 Npgsql存在安全漏洞，该漏洞源于存在溢出问题，攻击者可以利用此漏洞执行任意SQL语句。
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
npgsql npgsql >= 4.0.0, < 4.0.14 -

II. Public POCs for CVE-2024-32655

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Qwen3.6-35B-A3B · 10834 chars
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III. Intelligence Information for CVE-2024-32655

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Patches & Fixes for CVE-2024-32655 (6)

Vendor Advisories for CVE-2024-32655 (1)

News Coverage for CVE-2024-32655 (1)

Other References for CVE-2024-32655 (6)

IV. Related Vulnerabilities

Same weakness: CWE-190

V. Comments for CVE-2024-32655

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