CVE-2017-11671
published 2017-07-26CVE-2017-11671: 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…
PriorityP413medium4CVSS 3.0
AVLACLPRNUINSUCLINAN
EPSS
0.44%
35.6th percentile
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.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| gnu | gcc | — | — |
| gnu | gcc | — | — |
| gnu | gcc | — | — |
| gnu | gcc | — | — |
| gnu | gcc | — | — |
| gnu | gcc | — | — |
| gnu | gcc | — | — |
| gnu | gcc | — | — |
| gnu | gcc | — | — |
| gnu | gcc | — | — |
| gnu | gcc | — | — |
| gnu | gcc | — | — |
| gnu | gcc | — | — |
CVSS provenance
nvdv3.04.0MEDIUMCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:P/I:N/A:N
osv4.0MEDIUM
vendor_redhat4.0MEDIUM
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GHSA
GHSA-9qgp-g97v-qq69: Under certain circumstances, the ix86_expand_builtin function in i386
ghsa_unreviewed·2022-05-14
CVE-2017-11671 [MEDIUM] CWE-338 GHSA-9qgp-g97v-qq69: Under certain circumstances, the ix86_expand_builtin function in i386
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.
OSV
CVE-2017-11671: Under certain circumstances, the ix86_expand_builtin function in i386
osv·2017-07-26·CVSS 4.0
CVE-2017-11671 [MEDIUM] CVE-2017-11671: Under certain circumstances, the ix86_expand_builtin function in i386
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.
Ubuntu
GCC vulnerability
vendor_ubuntu·2022-12-08
CVE-2017-11671 GCC vulnerability
Title: GCC vulnerability
Summary: GNU Compiler Collection's (GCC) random number generation could be
made less random with specially crafted input.
Todd Eisenberger discovered that certain versions of GNU Compiler
Collection (GCC) could be made to clobber the status flag of RDRAND
and RDSEED with specially crafted input. This could potentially lead
to less randomness in random number generation.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics
vendor_redhat·2017-03-25·CVSS 4.0
CVE-2017-11671 [MEDIUM] gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics
gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics
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.
Package: compat-gcc-295 (Red Hat Enterprise Linux 5) - Not affected
Package: compat-gcc-296 (Red Hat Enterprise Linux 5) - Not affected
Package: compat-gcc-32 (Red Hat Enterprise Linux 5) - Not affected
Package: compat-gcc-34 (Red Hat Enterprise Linux 5) - Not affected
Package: gcc (Red Hat Enterp
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2017-11671 gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics
bugzilla·2017-07-27·CVSS 4.0
CVE-2017-11671 [MEDIUM] CVE-2017-11671 gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics
CVE-2017-11671 gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics
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.
Upstream bug:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80180
Upstream patch:
https://gcc.gnu.org/ml/gcc-patches/2017-03/msg01349.html
References:
http://seclists.org/oss-sec/2017/q3/218
Discussion:
Created gcc tracking bugs for this issue:
Affects: fedora-25 [bug 1475735]
Created mingw-gcc tracking bugs for this issue:
Affects: epel-all [bug 1475
Bugzilla
CVE-2017-11671 gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics [fedora-25]
bugzilla·2017-07-27·CVSS 4.0
CVE-2017-11671 [MEDIUM] CVE-2017-11671 gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics [fedora-25]
CVE-2017-11671 gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics [fedora-25]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-25.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Use the following template t
Bugzilla
CVE-2017-11671 mingw-gcc: gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics [fedora-25]
bugzilla·2017-07-27·CVSS 4.0
CVE-2017-11671 [MEDIUM] CVE-2017-11671 mingw-gcc: gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics [fedora-25]
CVE-2017-11671 mingw-gcc: gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics [fedora-25]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-25.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Use the following
Bugzilla
CVE-2017-11671 mingw-gcc: gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics [epel-all]
bugzilla·2017-07-27·CVSS 4.0
CVE-2017-11671 [MEDIUM] CVE-2017-11671 mingw-gcc: gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics [epel-all]
CVE-2017-11671 mingw-gcc: gcc: GCC generates incorrect code for RDRAND/RDSEED intrinsics [epel-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multipl
http://openwall.com/lists/oss-security/2017/07/27/2http://www.securityfocus.com/bid/100018https://access.redhat.com/errata/RHSA-2018:0849https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80180https://gcc.gnu.org/ml/gcc-patches/2017-03/msg01349.htmlhttp://openwall.com/lists/oss-security/2017/07/27/2http://www.securityfocus.com/bid/100018https://access.redhat.com/errata/RHSA-2018:0849https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80180https://gcc.gnu.org/ml/gcc-patches/2017-03/msg01349.html
2017-07-26
Published