Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2017-11671

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
26/07/2017
Last modified:
20/04/2025

Description

Under certain circumstances, the ix86_expand_builtin function in i386.c in GNU Compiler Collection (GCC) version 4.6, 4.7, 4.8, 4.9, 5 before 5.5, and 6 before 6.4 will generate instruction sequences that clobber the status flag of the RDRAND and RDSEED intrinsics before it can be read, potentially causing failures of these instructions to go unreported. This could potentially lead to less randomness in random number generation.

Impact

Vector 3.x
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.00 MEDIUM
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x
4.00
Severity 3.x
MEDIUM
Vector 2.0
AV:L/AC:L/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 2.10 LOW
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

Attack Vector (AV): Local
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0
2.10
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:gnu:gcc:4.6:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:4.7:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:4.8:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:4.9:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:5.0:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:5.1:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:5.2:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:5.3:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:5.4:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:6.0:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:6.1:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:6.2:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gcc:6.3:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools