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HIGH

bouncycastle: Carry propagation bug in math.raw.Nat??? class

Published Jun 4, 2018

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.

Affected products

Remediation

Red Hat statement

This issue affects the versions of bouncycastle as shipped with Red Hat Subscription Asset Manager 1.x. Red Hat Product Security has rated this issue as having a security impact of Low. No update is planned for this product at this time. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

Metrics

Weaknesses (2)

CWE-19

CWE-682

References (10)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 4, 2018
Updated Aug 6, 2024
Reserved Jun 4, 2018
Link CVE-2016-1000340
CISA Vulnrichment
Updated n/a
NVD
Status Modified
Modified Jun 17, 2026
Link CVE-2016-1000340
Red Hat
Severity Low
Public date Jun 7, 2018
Links CVE-2016-1000340 - Bugzilla
GHSA-R97X-3G8F-GX3M