PT-2017-12164 · Gnu+4 · Gcc+4

Todd Eisenberger · Published 2017-07-26 · Updated 2022-12-08 · CVE-2017-11671

Positive Technologies (AI Summary)

CVSS v3.1

4.0

Medium

Base vector

AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions GNU Compiler Collection (GCC) versions 4.6, 4.7, 4.8, 4.9, 5 before 5.5, and 6 before 6.4

Description The issue arises in the ix86 expand builtin function in i386.c, where under certain circumstances, it generates instruction sequences that clobber the status flag of the RDRAND and RDSEED intrinsics before it can be read. This could potentially cause failures of these instructions to go unreported, leading to less randomness in random number generation.

Recommendations For GNU Compiler Collection (GCC) version 4.6, update to a version after 4.6. For GNU Compiler Collection (GCC) version 4.7, update to a version after 4.7. For GNU Compiler Collection (GCC) version 4.8, update to a version after 4.8. For GNU Compiler Collection (GCC) version 4.9, update to a version after 4.9. For GNU Compiler Collection (GCC) version 5 before 5.5, update to version 5.5 or later. For GNU Compiler Collection (GCC) version 6 before 6.4, update to version 6.4 or later.

Fix

Weakness Enumeration

CWE-338

Related Identifiers

CESA-2018_0849

CVE-2017-11671

RHSA-2018:0849

RHSA-2018_0849

SUSE-SU-2017:2380-1

SUSE-SU-2017:2526-1

SUSE-SU-2017_2380-1

SUSE-SU-2017_2526-1

USN-5770-1

Affected Products

Centos

Gcc

Red Hat

Suse

Ubuntu

References · 35

• https://ubuntu.com/security/notices/USN-5770-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-11671 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2018-0849.html · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11671 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2017-11671 · Security Note
• https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80180 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5770-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-11671 · Security Note
• https://osv.dev/vulnerability/CVE-2017-11671 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:2526-1 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2018:0849 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:2380-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-11671 · Vendor Advisory
• https://bugzilla.suse.com/988274 · Note
• https://suse.com/support/update/announcement/2017/suse-su-20172380-1 · Note