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."
Remediation
References
http://web-in-security.blogspot.ca/2015/09/practical-invalid-curve-attacks.html
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00012.html
http://www.openwall.com/lists/oss-security/2015/10/22/9
http://www.openwall.com/lists/oss-security/2015/10/22/7
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.securityfocus.com/bid/79091
http://www.debian.org/security/2015/dsa-3417
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174915.html
http://www.securitytracker.com/id/1037053
http://www.securitytracker.com/id/1037046
http://www.securitytracker.com/id/1037036
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://rhn.redhat.com/errata/RHSA-2016-2036.html
http://rhn.redhat.com/errata/RHSA-2016-2035.html
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
https://usn.ubuntu.com/3727-1/
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
https://www.oracle.com/security-alerts/cpuapr2020.html
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