CVE-2015-7940
UnknownEPSS 4.82%
Last modified
CVE-2015-7940 is a vulnerability of currently unknown severity. The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an "invalid curve attack.". EPSS estimates a 4.82% chance of exploitation in the next 30 days.
Description
The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an "invalid curve attack."
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Opensuse | Leap | 42.1 |
| Opensuse | Opensuse | 13.1 |
| Opensuse | Opensuse | 13.2 |
| Bouncycastle | Bouncy Castle Crypto Package | <= 1.50 |
| Oracle | Application Testing Suite | 12.5.0.1 |
| Oracle | Application Testing Suite | 12.5.0.2 |
| Oracle | Application Testing Suite | 12.5.0.3 |
| Oracle | Enterprise Manager Ops Center | 12.1.4 |
| Oracle | Enterprise Manager Ops Center | 12.2.2 |
| Oracle | Peoplesoft Enterprise Peopletools | 8.54 |
| Oracle | Peoplesoft Enterprise Peopletools | 8.55 |
| Oracle | Virtual Desktop Infrastructure | 3.5.2 |
References
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00012.htmlThird Party Advisory
- http://web-in-security.blogspot.ca/2015/09/practical-invalid-curve-attacks.htmlTechnical Description
- http://www.openwall.com/lists/oss-security/2015/10/22/7Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2015/10/22/9Third Party Advisory, VDB Entry
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00012.htmlThird Party Advisory
- http://web-in-security.blogspot.ca/2015/09/practical-invalid-curve-attacks.htmlTechnical Description
- http://www.openwall.com/lists/oss-security/2015/10/22/7Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2015/10/22/9Third Party Advisory, VDB Entry
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2015-7940?
The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an "invalid curve attack."
How severe is CVE-2015-7940?
Severity scoring for CVE-2015-7940 is pending analysis. The EPSS model estimates a 4.82% probability of exploitation in the next 30 days.
How do I fix CVE-2015-7940?
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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Scan your code nowSource: NVD / NIST