CVE-2016-1000340

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.49%
Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2018:2669 vendor advisory
https://access.redhat.com/errata/RHSA-2018:2927 vendor advisory
https://www.oracle.com/security-alerts/cpuoct2020.html
https://security.netapp.com/advisory/ntap-20181127-0004/
https://github.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00#diff-e5934feac8203ca0104ab291a3560a31 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2016-1000340?
CVE-2016-1000340 has been scored as a high severity vulnerability.
How to fix CVE-2016-1000340?
To fix CVE-2016-1000340, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-1000340 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-1000340 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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