CVE-2019-15847
published 2019-09-02CVE-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…
PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCHINAN
EPSS
3.21%
86.7th percentile
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.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | gcc-9 | < gcc-9 9.2.1-7 (bullseye) | gcc-9 9.2.1-7 (bullseye) |
| gnu | gcc | < 7.5.0 | 7.5.0 |
| gnu | gcc | >= 10.0 < 10.1.0 | 10.1.0 |
| gnu | gcc | >= 8.0 < 8.4.0 | 8.4.0 |
| gnu | gcc | >= 9.0 < 9.3.0 | 9.3.0 |
| msrc | cbl_mariner_1.0_arm | — | — |
| msrc | cbl_mariner_1.0_x64 | — | — |
| msrc | cm1_gcc_9.1.0-7_on_cbl_mariner_1.0 | — | — |
| opensuse | leap | — | — |
| opensuse | leap | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N
osv7.5HIGH
vendor_debian7.5LOW
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
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Microsoft
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 ge
vendor_msrc·2019-09-10·CVSS 7.5
CVE-2019-15847 [HIGH] CWE-331 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 ge
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency
Red Hat
gcc: POWER9 "DARN" RNG intrinsic produces repeated output
vendor_redhat·2019-09-02·CVSS 7.5
CVE-2019-15847 [HIGH] CWE-331 gcc: POWER9 "DARN" RNG intrinsic produces repeated output
gcc: POWER9 "DARN" RNG intrinsic produces repeated output
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.
Statement: As per upstream DARN (or power9) is not supported in GCC 6 or older, therefore versions of gcc shipped with Red Hat Enterprise Linux 5, 6 and 7 are not affected by this flaw.
Package: gcc (Red Hat Enterprise Linux 5) - Not affected
Package: gcc (Red Hat Enterprise Linux 6) - Not affected
Package: gcc (Red Hat Enterprise Linux 7) - Not affec
Debian
CVE-2019-15847: gcc-9 - The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could opti...
vendor_debian·2019·CVSS 7.5
CVE-2019-15847 [HIGH] CVE-2019-15847: gcc-9 - The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could opti...
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.
Scope: local
bullseye: resolved (fixed in 9.2.1-7)
GHSA
GHSA-rf68-2835-83vw: The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call
ghsa_unreviewed·2022-05-24
CVE-2019-15847 [HIGH] CWE-331 GHSA-rf68-2835-83vw: The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call
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.
OSV
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
osv·2019-09-02·CVSS 7.5
CVE-2019-15847 [HIGH] 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
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-15847 mingw-gcc: gcc: POWER9 "DARN" RNG intrinsic produces repeated output [epel-all]
bugzilla·2019-09-25·CVSS 7.5
CVE-2019-15847 [HIGH] CVE-2019-15847 mingw-gcc: gcc: POWER9 "DARN" RNG intrinsic produces repeated output [epel-all]
CVE-2019-15847 mingw-gcc: gcc: POWER9 "DARN" RNG intrinsic produces repeated output [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 multiple sup
Bugzilla
CVE-2019-15847 gcc: POWER9 "DARN" RNG intrinsic produces repeated output [fedora-all]
bugzilla·2019-09-25·CVSS 7.5
CVE-2019-15847 [HIGH] CVE-2019-15847 gcc: POWER9 "DARN" RNG intrinsic produces repeated output [fedora-all]
CVE-2019-15847 gcc: POWER9 "DARN" RNG intrinsic produces repeated output [fedora-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 fedora-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 multiple supported
Bugzilla
CVE-2019-15847 mingw-gcc: gcc: POWER9 "DARN" RNG intrinsic produces repeated output [fedora-all]
bugzilla·2019-09-25·CVSS 7.5
CVE-2019-15847 [HIGH] CVE-2019-15847 mingw-gcc: gcc: POWER9 "DARN" RNG intrinsic produces repeated output [fedora-all]
CVE-2019-15847 mingw-gcc: gcc: POWER9 "DARN" RNG intrinsic produces repeated output [fedora-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 fedora-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 multiple
Bugzilla
CVE-2019-15847 gcc: POWER9 "DARN" RNG intrinsic produces repeated output
bugzilla·2019-09-25·CVSS 7.5
CVE-2019-15847 [HIGH] CVE-2019-15847 gcc: POWER9 "DARN" RNG intrinsic produces repeated output
CVE-2019-15847 gcc: POWER9 "DARN" RNG intrinsic produces repeated output
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.
Reference:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481
Discussion:
Created gcc tracking bugs for this issue:
Affects: fedora-all [bug 1755525]
Created mingw-gcc tracking bugs for this issue:
Affects: epel-all [bug 1755527]
Affects: fedora-all [bug 1755526]
---
Statement:
As per upstream DARN (or power9) is not supported in
arXiv
Gotta Catch 'em All: Aggregating CVSS Scores
arxiv_fulltext·2023-10-03
Gotta Catch 'em All: Aggregating CVSS Scores
Gotta Catch 'em All: Aggregating CVSS Scores
1st Ángel Longueira-Romero, 2nd Jose Luis Flores, 3rd Rosa Iglesias
Industrial Cybersecurity
Ikerlan Technology Research Centre (BRTA)
Arrasate/Mondragón, Spain
\alongueira, jlflores, riglesias\@ikerlan.es
4th Iñaki Garitano
Dept. of Electronics and Computing
Mondragon Unibertsitatea
Arrasate/Mondragón, Spain
[email protected]
## Abstract
Security metrics are not standardized, but international proposals such as the Common Vulnerability Scoring System (CVSS) for quantifying the severity of known vulnerabilities are widely used. Many CVSS aggregation mechanisms have been proposed in the literature. Nevertheless, factors related to the context of the System Under Test (SUT) are not taken into account in the aggregation process; vul
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00058.htmlhttps://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00058.htmlhttps://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481
2019-09-02
Published