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CVE-2023-23926

Quick assessment

Affected
neo4j apoc
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.

Neo4j是美国Neo4j公司的一款基于Java的且完全兼容ACID的图形数据库，它支持数据迁移、附加组件等。 Neo4j 5.5.0之前版本存在代码问题漏洞，该漏洞源于存在XML外部实体(XXE)漏洞，攻击者利用该漏洞可以读取本地文件、发送 HTTP请求以及对应用程序执行拒绝服务攻击。

CVSS 5.9 · Medium EPSS 0.89% · P58
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I. Basic Information for CVE-2023-23926

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
APOC (Awesome Procedures on Cypher) is an add-on library for Neo4j. An XML External Entity (XXE) vulnerability found in the apoc.import.graphml procedure of APOC core plugin prior to version 5.5.0 and 4.4.0.14 (4.4 branch) in Neo4j graph database. XML External Entity (XXE) injection occurs when the XML parser allows external entities to be resolved. The XML parser used by the apoc.import.graphml procedure was not configured in a secure way and therefore allowed this. External entities can be used to read local files, send HTTP requests, and perform denial-of-service attacks on the application. Abusing the XXE vulnerability enabled assessors to read local files remotely. Although with the level of privileges assessors had this was limited to one-line files. With the ability to write to the database, any file could have been read. Additionally, assessors noted, with local testing, the server could be crashed by passing in improperly formatted XML. The minimum version containing a patch for this vulnerability is 5.5.0. Those who cannot upgrade the library can control the allowlist of the procedures that can be used in your system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
XML外部实体引用的不恰当限制(XXE)
Source: CVE Program / CVE List V5
Vulnerability Title
Neo4j 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Neo4j是美国Neo4j公司的一款基于Java的且完全兼容ACID的图形数据库，它支持数据迁移、附加组件等。 Neo4j 5.5.0之前版本存在代码问题漏洞，该漏洞源于存在XML外部实体(XXE)漏洞，攻击者利用该漏洞可以读取本地文件、发送 HTTP请求以及对应用程序执行拒绝服务攻击。
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
neo4j apoc < 4.4.0.14 -

II. Public POCs for CVE-2023-23926

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2023-23926

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Patches & Fixes for CVE-2023-23926 (1)

Vendor Advisories for CVE-2023-23926 (1)

Other References for CVE-2023-23926 (2)

IV. Related Vulnerabilities

Same vendor: neo4j
Same weakness: CWE-611

V. Comments for CVE-2023-23926

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