CVE-2016-3995
UnknownEPSS 1.86%
Last modified
CVE-2016-3995 is a vulnerability of currently unknown severity. The timing attack protection in Rijndael::Enc::ProcessAndXorBlock and Rijndael::Dec::ProcessAndXorBlock in Crypto++ (aka cryptopp) before 5.6.4 may be optimized out by the compiler, which allows attackers to conduct timing attacks.. EPSS estimates a 1.86% chance of exploitation in the next 30 days.
Description
The timing attack protection in Rijndael::Enc::ProcessAndXorBlock and Rijndael::Dec::ProcessAndXorBlock in Crypto++ (aka cryptopp) before 5.6.4 may be optimized out by the compiler, which allows attackers to conduct timing attacks.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cryptopp | Crypto\+\+ | <= 5.6.3 |
References
- http://www.openwall.com/lists/oss-security/2016/04/11/2Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/85975Third Party Advisory, VDB Entry
- https://github.com/weidai11/cryptopp/issues/146Issue Tracking, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/04/11/2Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/85975Third Party Advisory, VDB Entry
- https://github.com/weidai11/cryptopp/issues/146Issue Tracking, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-3995?
The timing attack protection in Rijndael::Enc::ProcessAndXorBlock and Rijndael::Dec::ProcessAndXorBlock in Crypto++ (aka cryptopp) before 5.6.4 may be optimized out by the compiler, which allows attackers to conduct timing attacks.
How severe is CVE-2016-3995?
Severity scoring for CVE-2016-3995 is pending analysis. The EPSS model estimates a 1.86% probability of exploitation in the next 30 days.
How do I fix CVE-2016-3995?
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.
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Are you affected by CVE-2016-3995?
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