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In Bouncy Castle JCE Provider the other party DH public key is not fully validated

Low severity GitHub Reviewed Published Oct 17, 2018 to the GitHub Advisory Database • Updated Jan 9, 2023

Package

maven org.bouncycastle:bcprov-jdk14 (Maven)

Affected versions

< 1.56

Patched versions

1.56
maven org.bouncycastle:bcprov-jdk15 (Maven)
< 1.56
1.56

Description

In the Bouncy Castle JCE Provider version 1.55 and earlier the other party DH public key is not fully validated. This can cause issues as invalid keys can be used to reveal details about the other party's private key where static Diffie-Hellman is in use. As of release 1.56 the key parameters are checked on agreement calculation.

References

Published to the GitHub Advisory Database Oct 17, 2018
Reviewed Jun 16, 2020
Last updated Jan 9, 2023

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

0.327%
(71st percentile)

Weaknesses

No CWEs

CVE ID

CVE-2016-1000346

GHSA ID

GHSA-fjqm-246c-mwqg

Source code

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