CVE-2023-23926

描述

### Impact A XML External Entity (XXE) vulnerability found in the apoc.import.graphml procedure of APOC core plugin 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. ### Patches The users should aim to use the latest released version compatible with their Neo4j version. The minimum versions containing patch for this vulnerability is 5.5.0. ### Workarounds If you cannot upgrade the library, you can control the [allowlist](https://neo4j.com/docs/operations-manual/current/reference/configuration-settings/#config_dbms.security.procedures.allowlist) of the procedures that can be used in your system. ### For more information If you have any questions or comments about this advisory: * Open an issue in [neo4j-apoc](https://github.com/neo4j/apoc) * Email us at [[email protected]](mailto:[email protected]) ### Credits We want to publicly recognise the contribution of Christopher Schneider – State Farm.

如何修補 CVE-2023-23926

要修補 CVE-2023-23926,請將受影響套件升級到下列已修補版本。

• —升級至 5.5.0 或更新版本

CVE-2023-23926 正在被利用嗎?

低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• >= 5.0.0, < 5.5.0