Vulnerability 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."
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Opensuse | Leap | 42.1 |
| Opensuse | Opensuse | 13.1 |
| Bouncycastle | Bouncy Castle Crypto Package | <= 1.50 |
| Oracle | Application Testing Suite | 12.5.0.1 |
| Oracle | Enterprise Manager Ops Center | 12.1.4 |
| Oracle | Peoplesoft Enterprise Peopletools | 8.54 |
| Oracle | Virtual Desktop Infrastructure | 3.5.2 |
Related Weaknesses (CWE)
References
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174915.ht
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00012.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2035.html
- http://rhn.redhat.com/errata/RHSA-2016-2036.html
- http://web-in-security.blogspot.ca/2015/09/practical-invalid-curve-attacks.htmlTechnical Description
- http://www.debian.org/security/2015/dsa-3417
- http://www.openwall.com/lists/oss-security/2015/10/22/7Third Party AdvisoryVDB Entry
- http://www.openwall.com/lists/oss-security/2015/10/22/9Third Party AdvisoryVDB Entry
- http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.securityfocus.com/bid/79091
FAQ
What is CVE-2015-7940?
CVE-2015-7940 is a vulnerability with a CVSS score of 5.0 (MEDIUM). 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 c...
How severe is CVE-2015-7940?
CVE-2015-7940 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-7940?
Check the references section above for vendor advisories and patch information. Affected products include: Opensuse Leap, Opensuse Opensuse, Bouncycastle Bouncy Castle Crypto Package, Oracle Application Testing Suite, Oracle Enterprise Manager Ops Center.