Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXI5N3gtM2c4Zi1neDNt

The Bouncy Castle JCE Provider carry a propagation bug

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.

Permalink: https://github.com/advisories/GHSA-r97x-3g8f-gx3m
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXI5N3gtM2c4Zi1neDNt
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 6 years ago
Updated: almost 2 years ago

CVSS Score: 7.5
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Percentage: 0.00214
EPSS Percentile: 0.59007

Identifiers: GHSA-r97x-3g8f-gx3m, CVE-2016-1000340
References:

• https://nvd.nist.gov/vuln/detail/CVE-2016-1000340
• https://github.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00#diff-e5934feac8203ca0104ab291a3560a31
• https://access.redhat.com/errata/RHSA-2018:2669
• https://access.redhat.com/errata/RHSA-2018:2927
• https://github.com/advisories/GHSA-r97x-3g8f-gx3m
• https://security.netapp.com/advisory/ntap-20181127-0004/
• https://www.oracle.com/security-alerts/cpuoct2020.html

Repository: https://github.com/bcgit/bc-java
Blast Radius: 22.5

Affected Packages