Object deserialization via forged exception headers
Published Aug 24, 2023 · Updated Oct 1, 2024
Unsafe deserialization in Spring for Apache Kafka 2.8.1 through 2.9.10 and 3.0.0 through 3.0.9 allows attackers to load crafted objects. KafkaMessageListenerContainer accepts attacker-supplied deserialization-exception header bytes and passes them to Java ObjectInputStream without verifying that Spring created the header. Reachability requires an untrusted Kafka publisher, an enabled null-key or null-value exception check, and no ErrorHandlingDeserializer; Spring has not specified a single post-deserialization consequence.
Summary
What happened
Unsafe deserialization in Spring for Apache Kafka 2.8.1 through 2.9.10 and 3.0.0 through 3.0.9 allows attackers to load crafted objects. KafkaMessageListenerContainer accepts attacker-supplied deserialization-exception header bytes and passes them to Java ObjectInputStream without verifying that Spring created the header. Reachability requires an untrusted Kafka publisher, an enabled null-key or null-value exception check, and no ErrorHandlingDeserializer; Spring has not specified a single post-deserialization consequence.
The record
- CVE
- CVE-2023-34040
- Published
- Aug 24, 2023
- Updated
- Oct 1, 2024
- Vendor
- Spring
- Product
- Spring for Apache Kafka
- Classifications
- CWE-502
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 24, 2023CVE publishedPublication date reported by the CVE source.
- Oct 1, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.8.x <2.9.11
- Affected versionversion=2.9.x <2.9.11
- Affected versionversion=3.0.x <3.0.10
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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