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CVE-2016-7054

HighPublished

ChaCha20/Poly1305 heap-buffer-overflow

Published: May 4, 2017
Updated: Sep 17, 2024
Assigning CNA: openssl
Evidence observed: Dec 11, 2016

Primary CVSS

7.5/ 10High

nvd · CVSS 3.0

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS probability estimate

21.1%

Moderate · next 30 days

Percentile: 97.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

In OpenSSL 1.1.0 before 1.1.0c, TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to a DoS attack by corrupting larger payloads. This can result in an OpenSSL crash. This issue is not considered to be exploitable beyond a DoS.

Sources

OpenSSL 1.1.0a/1.1.0b - Denial of ServiceExploit
Silverfox · linux · Dec 11, 2016

Responsible use

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