CVE-2024-27284 in cassandra-rs
Summary
by MITRE • 02/29/2024
cassandra-rs is a Cassandra (CQL) driver for Rust. Code that attempts to use an item (e.g., a row) returned by an iterator after the iterator has advanced to the next item will be accessing freed memory and experience undefined behaviour. The problem has been fixed in version 3.0.0.
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Analysis
by VulDB Data Team • 04/02/2025
The vulnerability identified as CVE-2024-27284 affects the cassandra-rs library, a Rust-based Cassandra CQL driver that facilitates database operations within Rust applications. This issue represents a classic memory safety problem that can lead to critical system instability and potential security implications when applications interact with database results through iterators. The flaw manifests when developers attempt to reference data items that have already been advanced past by an iterator, creating a scenario where memory that has been freed or reused is accessed, resulting in undefined behavior that can compromise application integrity.
The technical root cause of this vulnerability lies in improper iterator management within the cassandra-rs library implementation. When an iterator advances to process the next item in a result set, the previous item's memory location may be invalidated or reused, yet the library fails to properly enforce or communicate this constraint to developers. This memory access pattern directly maps to CWE-416, which describes the use of freed memory vulnerability, and represents a fundamental flaw in memory management practices within the driver's internal architecture. The undefined behavior resulting from such access patterns can manifest as application crashes, data corruption, or potentially exploitable conditions depending on the specific memory layout and usage patterns.
The operational impact of this vulnerability extends beyond simple application instability to encompass potential data integrity concerns and system reliability issues. Applications utilizing the cassandra-rs library may experience unexpected termination when accessing stale data references, leading to service disruptions and potential data loss scenarios. The vulnerability is particularly concerning in production environments where database operations are frequent and critical to business operations, as the undefined behavior could be difficult to reproduce consistently and may only manifest under specific load conditions or data access patterns. This makes the vulnerability challenging to detect during testing phases and potentially exploitable by malicious actors who might craft specific queries to trigger memory corruption conditions.
Mitigation strategies for CVE-2024-27284 require immediate action to upgrade to version 3.0.0 or later, which contains the necessary fixes to prevent the iterator-related memory access issues. Organizations should conduct comprehensive code reviews to identify any instances where the cassandra-rs library is used with iterators, particularly focusing on scenarios where data items might be stored or referenced after iterator advancement. The fix likely involves implementing proper reference counting or copying mechanisms to ensure that accessed data remains valid throughout the application's usage lifecycle. Additionally, developers should implement defensive programming practices such as immediate data copying when storing iterator results, and thorough testing with memory debugging tools to detect similar patterns in other parts of their codebase. This vulnerability demonstrates the critical importance of memory safety in database driver implementations and aligns with ATT&CK technique T1059.008 for the use of memory corruption to execute arbitrary code, though the immediate impact is primarily system instability rather than direct code execution.