CVE-2023-34040

MEDIUM

Spring for Apache Kafka <3.0.9 & <2.9.10 - Deserialization

Title source: llm

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.

Exploits (5)

nomisec WORKING POC 46 stars
by Contrast-Security-OSS · poc
https://github.com/Contrast-Security-OSS/Spring-Kafka-POC-CVE-2023-34040
nomisec WORKING POC 32 stars
by pyn3rd · poc
https://github.com/pyn3rd/CVE-2023-34040
github WORKING POC 5 stars
by JAckLosingHeart · javapoc
https://github.com/JAckLosingHeart/CVE-PoC-Collection/tree/main/spring-CVE-2023-34040
nomisec WORKING POC 1 stars
by huyennhat-dev · poc
https://github.com/huyennhat-dev/cve-2023-34040
nomisec WORKING POC
by buiduchoang24 · poc
https://github.com/buiduchoang24/CVE-2023-34040

Scores

CVSS v3 5.3
EPSS 0.2141
EPSS Percentile 95.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Details

CWE
CWE-502
Status published
Products (2)
org.springframework.kafka/spring-kafka 2.8.1 - 2.9.11Maven
vmware/spring_for_apache_kafka 2.8.1 - 2.9.10
Published Aug 24, 2023
Tracked Since Feb 18, 2026