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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2016-1000340 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue affects the versions of bouncycastle as shipped with Red Hat Subscription Asset Manager 1.x. Red Hat Product Security has rated this issue as having a security impact of Low. No update is planned for this product at this time. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
| CVSS3 Base Score | 2.9 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
| Attack Vector | Local |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | Low |
| Availability Impact | None |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Satellite 6.4 for RHEL 7 | RHSA-2018:2927 | 2018-10-16 |
| Red Hat JBoss Fuse 7 | RHSA-2018:2669 | 2018-09-11 |
| Red Hat Satellite 6.4 for RHEL 7 | RHSA-2018:2927 | 2018-10-16 |
| Platform | Package | State |
|---|---|---|
| Red Hat Virtualization 4 | eap7-bouncycastle | Not affected |
| Red Hat Subscription Asset Manager 1 | bouncycastle | Will not fix |
| Red Hat Software Collections for Red Hat Enterprise Linux | rh-eclipse46-bouncycastle | Will not fix |
| Red Hat Single Sign-On 7 | bouncycastle | Under investigation |
| Red Hat Satellite 6 | bouncycastle | Affected |
| Red Hat OpenShift Application Runtimes 1.0 | swarm | Not affected |
| Red Hat JBoss Fuse 6 | bouncycastle | Will not fix |
| Red Hat JBoss EAP 7 | bouncycastle | Not affected |
| Red Hat JBoss Data Virtualization 6 | bouncycastle | Under investigation |
| Red Hat JBoss Data Grid 7 | bouncycastle | Under investigation |
Vulmon