CVE-2016-1000340 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://access.redhat.com/errata/RHSA-2018:2669 https://access.redhat.com/errata/RHSA-2018:2927 https://github.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00diff-e5934feac8203ca0104ab291a3560a31 https://security.netapp.com/advisory/ntap-20181127-0004/ https://www.oracle.com/security-alerts/cpuoct2020.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5