Vulnerability Details CVE-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 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 31.0%
CVSS Severity
CVSS v3 Score 4.0
CVSS v2 Score 2.1
References
- http://openwall.com/lists/oss-security/2017/07/27/2
- http://www.securityfocus.com/bid/100018
- https://access.redhat.com/errata/RHSA-2018:0849
- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80180
- https://gcc.gnu.org/ml/gcc-patches/2017-03/msg01349.html
- http://openwall.com/lists/oss-security/2017/07/27/2
- http://www.securityfocus.com/bid/100018
- https://access.redhat.com/errata/RHSA-2018:0849
- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80180
- https://gcc.gnu.org/ml/gcc-patches/2017-03/msg01349.html
Products affected by CVE-2017-11671
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cpe:2.3:a:gnu:gcc:4.6
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cpe:2.3:a:gnu:gcc:4.7
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cpe:2.3:a:gnu:gcc:4.8
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cpe:2.3:a:gnu:gcc:4.9
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cpe:2.3:a:gnu:gcc:5.0
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cpe:2.3:a:gnu:gcc:5.1
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cpe:2.3:a:gnu:gcc:5.2
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cpe:2.3:a:gnu:gcc:5.3
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cpe:2.3:a:gnu:gcc:5.4
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cpe:2.3:a:gnu:gcc:6.0
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cpe:2.3:a:gnu:gcc:6.1
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cpe:2.3:a:gnu:gcc:6.2
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cpe:2.3:a:gnu:gcc:6.3