CVE-2019-15847
Summary
| CVE | CVE-2019-15847 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2019-09-02 23:15:10 UTC |
| Updated | 2026-10-14 07:16:46 UTC |
| Description | The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call, thus reducing the entropy of the random number generator. This occurred because a volatile operation was not specified. For example, within a single execution of a program, the output of every __builtin_darn() call may be the same. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Problem Types: CWE-331 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| 2.0 | [email protected] | Primary | 5 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
NoneAvailability
NoneAV:N/AC:L/Au:N/C:P/I:N/A:N
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Na | N/a | affected n/a | Not specified |
| ADP | Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | affected V3.1.0 V3.1.5 custom | Not specified |
| ADP | Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | affected V3.1.0 V3.1.5 custom | Not specified |
| ADP | Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | affected V3.1.0 V3.1.5 custom | Not specified |
| ADP | Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | affected V3.1.0 V3.1.5 custom | Not specified |
| ADP | Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | affected V3.1.0 V3.1.5 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| cert-portal.siemens.com/productcert/html/ssa-398330.html | 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e | cert-portal.siemens.com | |
| 91481 – (CVE-2019-15847) POWER9 "DARN" RNG intrinsic produces repeated output (CVE-2019-15847) | af854a3a-2127-422b-91ae-364da2661108 | gcc.gnu.org | Issue Tracking, Vendor Advisory |
| [security-announce] openSUSE-SU-2019:2365-1: moderate: Security update f | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Mailing List, Third Party Advisory |
| [security-announce] openSUSE-SU-2019:2364-1: moderate: Security update f | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Mailing List, Third Party Advisory |
| [security-announce] openSUSE-SU-2020:0716-1: moderate: Security update f | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Mailing List, Third Party Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
- 755898 SUSE Enterprise Linux Security Update for gcc7 (SUSE-SU-2023:3662-1)
- 900124 CBL-Mariner Linux Security Update for gcc 9.1.0
- 903131 Common Base Linux Mariner (CBL-Mariner) Security Update for gcc (1829)
- 905989 Common Base Linux Mariner (CBL-Mariner) Security Update for gcc (1829-1)