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CVE-2016-1000340

7.5 · HIGH

In the Bouncy Castle JCE Provider versions 1.51 to 1.55, a carry propagation bug was introduced in the implementation of squaring for several raw math classes have been fixed (org.bouncycastle.math…

Published Jun 4, 2018CWE-19EPSS 2.30%

Overview

CVE-2016-1000340 is a high-severity vulnerability. It was published on June 4, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Bouncy Castle JCE Provider versions 1.51 to 1.55, a carry propagation bug was introduced in the implementation of squaring for several raw math classes have been fixed (org.bouncycastle.math.raw.Nat???). These classes are used by our custom elliptic curve implementations (org.bouncycastle.math.ec.custom.**), so there was the possibility of rare (in general usage) spurious calculations for elliptic curve scalar multiplications. Such errors would have been detected with high probability by the output validation for our scalar multipliers.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/errata/RHSA-2018:2669Refaccess.redhat.com/errata/RHSA-2018:2927GitHubgithub.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00#diff-e5934feac8203ca0104ab291a3560a31Refsecurity.netapp.com/advisory/ntap-20181127-0004/Refwww.oracle.com/security-alerts/cpuoct2020.htmlRefaccess.redhat.com/errata/RHSA-2018:2669Refaccess.redhat.com/errata/RHSA-2018:2927GitHubgithub.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00#diff-e5934feac8203ca0104ab291a3560a31Refsecurity.netapp.com/advisory/ntap-20181127-0004/Refwww.oracle.com/security-alerts/cpuoct2020.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-1000340?

CVE-2016-1000340 is a high-severity vulnerability. It was published on June 4, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2016-1000340?

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-1000340?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-1000340?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-1000340 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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