Vulnerability Details CVE-2016-1000340
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 65.2%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://access.redhat.com/errata/RHSA-2018:2669
- https://access.redhat.com/errata/RHSA-2018:2927
- https://github.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00#diff-e5934feac8203ca0104ab291a3560a31
- https://security.netapp.com/advisory/ntap-20181127-0004/
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://access.redhat.com/errata/RHSA-2018:2669
- https://access.redhat.com/errata/RHSA-2018:2927
- https://github.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00#diff-e5934feac8203ca0104ab291a3560a31
- https://security.netapp.com/advisory/ntap-20181127-0004/
- https://www.oracle.com/security-alerts/cpuoct2020.html
Products affected by CVE-2016-1000340
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cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-java-crytography-api:1.51
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cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-java-crytography-api:1.52
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cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-java-crytography-api:1.53
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cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-java-crytography-api:1.54
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cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-java-crytography-api:1.55