CVE-2016-7440
MEDIUMCVSS 5.5/10EPSS 0.30%
Last modified
CVE-2016-7440 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. The C software implementation of AES Encryption and Decryption in wolfSSL (formerly CyaSSL) before 3.9.10 makes it easier for local users to discover AES keys by leveraging cache-bank timing differences.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.
Description
The C software implementation of AES Encryption and Decryption in wolfSSL (formerly CyaSSL) before 3.9.10 makes it easier for local users to discover AES keys by leveraging cache-bank timing differences.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mariadb | Mariadb | >= 5.5.0, < 5.5.53 |
| Mariadb | Mariadb | >= 10.0.0, < 10.0.28 |
| Mariadb | Mariadb | >= 10.1.0, < 10.1.19 |
| Oracle | Mysql | >= 5.5.0, <= 5.5.52 |
| Oracle | Mysql | >= 5.6.0, <= 5.6.33 |
| Oracle | Mysql | >= 5.7.0, <= 5.7.15 |
| Wolfssl | Wolfssl | < 3.9.10 |
| Debian | Debian Linux | 8.0 |
References
- http://www.debian.org/security/2016/dsa-3706Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlPatch, Third Party Advisory
- http://www.securityfocus.com/bid/93659Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037050Broken Link, Third Party Advisory, VDB Entry
- https://mariadb.com/kb/en/mariadb/mariadb-10028-release-notes/Third Party Advisory
- http://www.debian.org/security/2016/dsa-3706Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlPatch, Third Party Advisory
- http://www.securityfocus.com/bid/93659Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037050Broken Link, Third Party Advisory, VDB Entry
- https://mariadb.com/kb/en/mariadb/mariadb-10028-release-notes/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-7440?
The C software implementation of AES Encryption and Decryption in wolfSSL (formerly CyaSSL) before 3.9.10 makes it easier for local users to discover AES keys by leveraging cache-bank timing differences.
How severe is CVE-2016-7440?
CVE-2016-7440 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.
How do I fix CVE-2016-7440?
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.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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