CVE-2019-16143
CRITICALCVSS 9.8/10EPSS 0.93%
Last modified
CVE-2019-16143 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in the blake2 crate before 0.8.1 for Rust. The BLAKE2b and BLAKE2s algorithms, when used with HMAC, produce incorrect results because the block sizes are half of the required sizes.. EPSS estimates a 0.93% chance of exploitation in the next 30 days.
Description
An issue was discovered in the blake2 crate before 0.8.1 for Rust. The BLAKE2b and BLAKE2s algorithms, when used with HMAC, produce incorrect results because the block sizes are half of the required sizes.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Blake2 | Blake2-Rust | < 0.8.1 |
References
- https://rustsec.org/advisories/RUSTSEC-2019-0019.htmlThird Party Advisory
- https://rustsec.org/advisories/RUSTSEC-2019-0019.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-16143?
An issue was discovered in the blake2 crate before 0.8.1 for Rust. The BLAKE2b and BLAKE2s algorithms, when used with HMAC, produce incorrect results because the block sizes are half of the required sizes.
How severe is CVE-2019-16143?
CVE-2019-16143 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.93% probability of exploitation in the next 30 days.
How do I fix CVE-2019-16143?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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Are you affected by CVE-2019-16143?
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Scan your code nowSource: NVD / NIST