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Improper Data Handling Affecting bouncycastle package, versions <1.56-1

Severity

 Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.21% (60th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-BOUNCYCASTLE-278588
  • published4 Jun 2018
  • disclosed4 Jun 2018
Report a new vulnerability Found a mistake?

Introduced: 4 Jun 2018

CVE-2016-1000340  (opens in a new tab)
CWE-19  (opens in a new tab)

How to fix?

Upgrade Debian:unstable bouncycastle to version 1.56-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bouncycastle package and not the bouncycastle package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.