CVE-2023-34040— Java Deserialization vulnerability in Spring-Kafka When Improperly Configured
Quick assessment
Affected
Spring Spring For Apache Kafka
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.
Spring Framework是美国Spring团队的一套开源的Java、JavaEE应用程序框架。该框架可帮助开发人员构建高质量的应用。 Spring Framework 存在安全漏洞，该漏洞源于存在反序列化漏洞，允许容器在配置了ErrorHandlingDeserializer的情况下反序列化标头。受影响的产品和版本：Spring for Apache Kafka 3.0.9及之前版本，2.9.10及之前版本。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-34040
Vulnerability Information
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Vulnerability Title
Java Deserialization vulnerability in Spring-Kafka When Improperly Configured
Source: CVE Program / CVE List V5
Vulnerability Description
In Spring for Apache Kafka 3.0.9 and earlier and versions 2.9.10 and earlier, a possible deserialization attack vector existed, but only if unusual configuration was applied. An attacker would have to construct a malicious serialized object in one of the deserialization exception record headers.
Specifically, an application is vulnerable when all of the following are true:
* The user does not configure an ErrorHandlingDeserializer for the key and/or value of the record
* The user explicitly sets container properties checkDeserExWhenKeyNull and/or checkDeserExWhenValueNull container properties to true.
* The user allows untrusted sources to publish to a Kafka topic
By default, these properties are false, and the container only attempts to deserialize the headers if an ErrorHandlingDeserializer is configured. The ErrorHandlingDeserializer prevents the vulnerability by removing any such malicious headers before processing the record.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Spring Framework 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Spring Framework是美国Spring团队的一套开源的Java、JavaEE应用程序框架。该框架可帮助开发人员构建高质量的应用。 Spring Framework 存在安全漏洞，该漏洞源于存在反序列化漏洞，允许容器在配置了ErrorHandlingDeserializer的情况下反序列化标头。受影响的产品和版本：Spring for Apache Kafka 3.0.9及之前版本，2.9.10及之前版本。
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 |
|---|---|---|---|---|
| Spring | Spring For Apache Kafka | 2.8.x ~ 2.9.11 | - |
|
II. Public POCs for CVE-2023-34040
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | POC for Spring Kafka Deserialization Vulnerability CVE-2023-34040 | https://github.com/Contrast-Security-OSS/Spring-Kafka-POC-CVE-2023-34040 | POC Details |
| 2 | Spring-Kafka-Deserialization-Remote-Code-Execution | https://github.com/pyn3rd/CVE-2023-34040 | POC Details |
| 3 | In Spring for Apache Kafka 3.0.9 and earlier and versions 2.9.10 and earlier, a possible deserialization attack vector existed, but only if unusual configuration was applied. An attacker would have to construct a malicious serialized object in one of the deserialization exception record headers. Cre: NVD | https://github.com/buiduchoang24/CVE-2023-34040 | POC Details |
| 4 | None | https://github.com/huyennhat-dev/cve-2023-34040 | POC Details |
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Other References for CVE-2023-34040 (1)
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V. Comments for CVE-2023-34040
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