CVE-2017-11671 Detail
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current 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.
Source:
MITRE
Description Last Modified:
07/27/2017
View Analysis Description
Analysis 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.
Source:
MITRE
Description Last Modified:
07/27/2017
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
4.0 MEDIUM
Vector:
AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
(V3 legend)
Impact Score:
1.4
Exploitability Score:
2.5
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
CVSS v2.0 Severity and Metrics:
Base Score:
2.1 LOW
Vector:
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
(V2 legend)
Impact Subscore:
2.9
Exploitability Subscore:
3.9
Access Vector (AV):
Local
Access Complexity (AC):
Low
Authentication (AU):
None
Confidentiality (C):
Partial
Integrity (I):
None
Availability (A):
None
Additional Information:
Allows unauthorized disclosure of information
References to Advisories, Solutions, and Tools
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Technical Details
Vulnerability Type
(View All)
- Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (CWE-338)
Change History
4 change records found
- show changes
CVE Modified by MITRE -
4/11/2018 9:29:01 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
https://access.redhat.com/errata/RHSA-2018:0849 [No Types Assigned] |
Initial Analysis -
8/9/2017 12:30:07 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
Record truncated, showing 500 of 548 characters.
View Entire Change Record
OR
*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:*:*:*:* |
| Added |
CVSS V2 |
|
(AV:L/AC:L/Au:N/C:P/I:N/A:N) |
| Added |
CVSS V3 |
|
AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| Added |
CWE |
|
CWE-338 |
| Changed |
Reference Type |
http://openwall.com/lists/oss-security/2017/07/27/2 No Types Assigned |
http://openwall.com/lists/oss-security/2017/07/27/2 Mailing List, Third Party Advisory |
| Changed |
Reference Type |
http://www.securityfocus.com/bid/100018 No Types Assigned |
http://www.securityfocus.com/bid/100018 Third Party Advisory, VDB Entry |
| Changed |
Reference Type |
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80180 No Types Assigned |
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80180 Issue Tracking, Vendor Advisory |
| Changed |
Reference Type |
https://gcc.gnu.org/ml/gcc-patches/2017-03/msg01349.html No Types Assigned |
https://gcc.gnu.org/ml/gcc-patches/2017-03/msg01349.html Mailing List |
CVE Modified by MITRE -
8/1/2017 9:29:00 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
http://www.securityfocus.com/bid/100018 [No Types Assigned] |
CVE Modified by MITRE -
7/27/2017 9:29:09 PM
| Action |
Type |
Old Value |
New Value |
| Changed |
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. |
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. |
| Added |
Reference |
|
http://openwall.com/lists/oss-security/2017/07/27/2 [No Types Assigned] |
Quick Info
CVE Dictionary Entry:
CVE-2017-11671
NVD Published Date:
07/26/2017
NVD Last Modified:
04/11/2018
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