National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-15847 Detail

Current 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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.5 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.html
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481 Issue Tracking Vendor Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-331 Insufficient Entropy NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
10.0


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-15847
NVD Published Date:
09/02/2019
NVD Last Modified:
10/22/2019