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CVE-2015-7940

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Date: November 9, 2015

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."

Language: Java

Severity Score

Related Resources (24)

Severity Score

Weakness Type (CWE)

Cryptographic Issues

CWE-310

Information Leak / Disclosure

CWE-200

Top Fix

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Upgrade Version

Upgrade to version org.bouncycastle:bcprov-ext-jdk15on:1.51,org.bouncycastle:bcprov-jdk14:1.51,org.bouncycastle:bcprov-jdk15on:1.51

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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