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How the CVE Works:
The vulnerability in Arrow2 arises from the unsafe API method Rows::row_unchecked(), which fails to perform proper bounds checking. This allows attackers to access memory outside the intended buffer boundaries, leading to potential data corruption, information leaks, or remote code execution. Since Arrow2 is no longer maintained, no official patch will be released, leaving applications using this crate exposed. The flaw stems from improper validation of row indices before accessing the underlying buffer, making it exploitable via crafted malicious input.
DailyCVE Form:
Platform: Arrow2
Version: Unmaintained
Vulnerability: OOB Access
Severity: High
Date: May 30, 2025
Prediction: No patch expected
What Undercode Say:
Exploitation:
- Crafted input triggering `row_unchecked()` bypasses bounds checks.
- Malicious payloads can read/write adjacent memory.
- Exploitable in data-parsing applications.
Protection:
- Migrate to the maintained `arrow` crate.
- Manually validate row indices before access.
- Use memory-safe alternatives like Rust’s `Vec` with bounds checks.
Analytics:
- Affects applications processing untrusted Arrow2 data.
- High risk in data analytics pipelines.
- No known active exploits yet.
Commands:
Check if your project depends on Arrow2: cargo tree | grep arrow2
Code Fix (Workaround):
// Replace unsafe:
// let row = rows.row_unchecked(index);
// With safe alternative:
if index < rows.len() {
let row = rows.row(index).unwrap();
}
Mitigation Steps:
1. Audit code for `row_unchecked()` usage.
2. Replace with bounds-checked methods.
3. Monitor for memory corruption signs.
Detection Script (Example):
fn detect_unsafe_rows(file: &Path) -> bool {
let content = std::fs::read_to_string(file).unwrap();
content.contains("row_unchecked")
}
Logging Suspicious Access:
// Log OOB attempts:
if index >= rows.len() {
log::error!("OOB access attempt at index {}", index);
return Err("Invalid index");
}
End of Report.
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
