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The vulnerability in Ring’s AES functions occurs when overflow checking is enabled in Rust. Under certain conditions, arithmetic operations in the cryptographic functions can trigger a panic due to integer overflow. This is particularly exploitable in QUIC protocol implementations, where an attacker can send a maliciously crafted packet, forcing an arithmetic overflow that crashes the process. Given the probabilistic nature, this occurs roughly once per 2^32 packets, making it a potential denial-of-service (DoS) vector.
DailyCVE Form:
Platform: Ring (Rust)
Version: <0.17.8
Vulnerability: AES Panic on Overflow
Severity: Moderate
Date: May 9, 2025
What Undercode Say:
Exploitation:
- Craft QUIC packets with specific payloads to trigger arithmetic overflow.
- Flood target with malicious packets to increase panic probability.
// Example triggering payload (conceptual) let malicious_payload = vec![0xFF; 64]; // Overflows during AES processing
Detection:
- Check Ring version (
ring = "0.17.8"fixes this). - Monitor Rust panics in QUIC handlers.
Mitigation:
- Update Ring to v0.17.8 or later.
- Disable overflow checks in release builds:
[profile.release] overflow-checks = false
Analytics:
- Affects QUIC servers using Ring for TLS.
- Low exploit reliability (1/2^32 chance per packet).
Commands:
- Check dependency version:
cargo tree | grep ring
- Patch via
cargo update -p ring.
References:
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
