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CVE-2017-11671

Published: Jul 26, 2017Updated: May 13, 2026 Sources: CVE List NVDCWE-338
NVD MITRE
4.0CVSSMEDIUM
EPSS Score
0.4%
Top 64.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-338

Affected Products

n/an/a
gccgnuOSS Libraries
gnuoss-projectUSOSS Librariesaka g. nu

Exploitability

Official Patch Available

References

http://openwall.com/lists/oss-security/2017/07/27/2
openwall.com
http://www.securityfocus.com/bid/100018
securityfocus.com
https://access.redhat.com/errata/RHSA-2018:0849
access.redhat.com
and 2 more references View all →

Timeline

Published
Jul 26, 2017
Last Updated
May 13, 2026

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