CVE-2023-34040
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.
Severity: HIGH
CVE ID: CVE-2023-34040
CVSS Score: 7.8
CVSS Metrics: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: MEDIUM
CVE ID: CVE-2023-34040
CVSS Score: 5.3
CVSS Metrics: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Proof Of Concept
Contrast-Security-OSS
POC for Spring Kafka Deserialization Vulnerability CVE-2023-34040
Refrence: GitHub
pyn3rd
Spring-Kafka-Deserialization-Remote-Code-Execution
Refrence: GitHub
buiduchoang24
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
Refrence: GitHub