CVE Vulnerability

CVE-2019-15847

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481 Issue Tracking Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00058.html Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
Information

Published : 2019-09-02 11:15

Updated : 2020-09-17 01:38

NVD link : CVE-2019-15847

Mitre link : CVE-2019-15847

Products Affected
No products.
CWE
CWE-331

Insufficient Entropy