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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vmware | Spring For Apache Kafka | >= 2.8.1, <= 2.9.10 |
Related Weaknesses (CWE)
References
- https://spring.io/security/cve-2023-34040MitigationVendor Advisory
- https://spring.io/security/cve-2023-34040MitigationVendor Advisory
FAQ
What is CVE-2023-34040?
CVE-2023-34040 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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...
How severe is CVE-2023-34040?
CVE-2023-34040 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-34040?
Check the references section above for vendor advisories and patch information. Affected products include: Vmware Spring For Apache Kafka.