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Vulnerability details: VCID-3hv9-emcg-mudh
Vulnerability ID VCID-3hv9-emcg-mudh
Aliases CVE-2016-1000340
GHSA-r97x-3g8f-gx3m
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-19 Data Processing Errors
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-682 Incorrect Calculation
System Score Found at
cvssv3.1 7.5 https://access.redhat.com/errata/RHSA-2018:2669
generic_textual HIGH https://access.redhat.com/errata/RHSA-2018:2669
cvssv3.1 7.5 https://access.redhat.com/errata/RHSA-2018:2927
generic_textual HIGH https://access.redhat.com/errata/RHSA-2018:2927
cvssv3 2.9 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-1000340.json
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
epss 0.00642 https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
cvssv3.1 7.5 https://github.com/advisories/GHSA-r97x-3g8f-gx3m
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-r97x-3g8f-gx3m
generic_textual HIGH https://github.com/advisories/GHSA-r97x-3g8f-gx3m
cvssv3.1 7.5 https://github.com/bcgit/bc-java
generic_textual HIGH https://github.com/bcgit/bc-java
cvssv3.1 7.5 https://github.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00#diff-e5934feac8203ca0104ab291a3560a31
generic_textual HIGH https://github.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00#diff-e5934feac8203ca0104ab291a3560a31
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2016-1000340
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2016-1000340
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2016-1000340
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2016-1000340
cvssv3.1 7.5 https://security.netapp.com/advisory/ntap-20181127-0004
generic_textual HIGH https://security.netapp.com/advisory/ntap-20181127-0004
cvssv3.1 7.5 https://www.oracle.com/security-alerts/cpuoct2020.html
generic_textual HIGH https://www.oracle.com/security-alerts/cpuoct2020.html
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2018:2669
https://access.redhat.com/errata/RHSA-2018:2927
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-1000340.json
https://api.first.org/data/v1/epss?cve=CVE-2016-1000340
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1000340
https://github.com/advisories/GHSA-r97x-3g8f-gx3m
https://github.com/bcgit/bc-java
https://github.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00
https://github.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00#diff-e5934feac8203ca0104ab291a3560a31
https://nvd.nist.gov/vuln/detail/CVE-2016-1000340
https://security.netapp.com/advisory/ntap-20181127-0004
https://security.netapp.com/advisory/ntap-20181127-0004/
https://www.oracle.com/security-alerts/cpuoct2020.html
1588688 https://bugzilla.redhat.com/show_bug.cgi?id=1588688
cpe:2.3:a:bouncycastle:bc-java:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:bouncycastle:bc-java:*:*:*:*:*:*:*:*
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://access.redhat.com/errata/RHSA-2018:2669
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://access.redhat.com/errata/RHSA-2018:2927
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-1000340.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://github.com/advisories/GHSA-r97x-3g8f-gx3m
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://github.com/bcgit/bc-java
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://github.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00#diff-e5934feac8203ca0104ab291a3560a31
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-1000340
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-1000340
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-1000340
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://security.netapp.com/advisory/ntap-20181127-0004
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://www.oracle.com/security-alerts/cpuoct2020.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.69676
EPSS Score 0.00642
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T07:58:39.864552+00:00 ProjectKB MSRImporter Import https://raw.githubusercontent.com/SAP/project-kb/master/MSR2019/dataset/vulas_db_msr2019_release.csv 37.0.0